<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "https://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
<meta http-equiv="X-UA-Compatible" content="IE=11"/>
<meta name="generator" content="Doxygen 1.9.3"/>
<meta name="viewport" content="width=device-width, initial-scale=1"/>
<title>FabGL: i8086.cpp Source File</title>
<link href="tabs.css" rel="stylesheet" type="text/css"/>
<script type="text/javascript" src="jquery.js"></script>
<script type="text/javascript" src="dynsections.js"></script>
<link href="navtree.css" rel="stylesheet" type="text/css"/>
<script type="text/javascript" src="resize.js"></script>
<script type="text/javascript" src="navtreedata.js"></script>
<script type="text/javascript" src="navtree.js"></script>
<link href="search/search.css" rel="stylesheet" type="text/css"/>
<script type="text/javascript" src="search/searchdata.js"></script>
<script type="text/javascript" src="search/search.js"></script>
<link href="doxygen.css" rel="stylesheet" type="text/css" />
<link href="doxygen-awesome.css" rel="stylesheet" type="text/css"/>
</head>
<body>
<div id="top"><!-- do not remove this div, it is closed by doxygen! -->
<div id="titlearea">
<table cellspacing="0" cellpadding="0">
 <tbody>
 <tr id="projectrow">
  <td id="projectalign">
   <div id="projectname">FabGL
   </div>
   <div id="projectbrief">ESP32 Display Controller and Graphics Library</div>
  </td>
 </tr>
 </tbody>
</table>
</div>
<!-- end header part -->
<!-- Generated by Doxygen 1.9.3 -->
<script type="text/javascript">
/* @license magnet:?xt=urn:btih:d3d9a9a6595521f9666a5e94cc830dab83b65699&amp;dn=expat.txt MIT */
var searchBox = new SearchBox("searchBox", "search",'Search','.html');
/* @license-end */
</script>
<script type="text/javascript" src="menudata.js"></script>
<script type="text/javascript" src="menu.js"></script>
<script type="text/javascript">
/* @license magnet:?xt=urn:btih:d3d9a9a6595521f9666a5e94cc830dab83b65699&amp;dn=expat.txt MIT */
$(function() {
  initMenu('',true,false,'search.php','Search');
  $(document).ready(function() { init_search(); });
});
/* @license-end */
</script>
<div id="main-nav"></div>
</div><!-- top -->
<div id="side-nav" class="ui-resizable side-nav-resizable">
  <div id="nav-tree">
    <div id="nav-tree-contents">
      <div id="nav-sync" class="sync"></div>
    </div>
  </div>
  <div id="splitbar" style="-moz-user-select:none;" 
       class="ui-resizable-handle">
  </div>
</div>
<script type="text/javascript">
/* @license magnet:?xt=urn:btih:d3d9a9a6595521f9666a5e94cc830dab83b65699&amp;dn=expat.txt MIT */
$(document).ready(function(){initNavTree('i8086_8cpp_source.html',''); initResizable(); });
/* @license-end */
</script>
<div id="doc-content">
<!-- window showing the filter options -->
<div id="MSearchSelectWindow"
     onmouseover="return searchBox.OnSearchSelectShow()"
     onmouseout="return searchBox.OnSearchSelectHide()"
     onkeydown="return searchBox.OnSearchSelectKey(event)">
</div>

<!-- iframe showing the search results (closed by default) -->
<div id="MSearchResultsWindow">
<iframe src="javascript:void(0)" frameborder="0" 
        name="MSearchResults" id="MSearchResults">
</iframe>
</div>

<div class="header">
  <div class="headertitle"><div class="title">i8086.cpp</div></div>
</div><!--header-->
<div class="contents">
<div class="fragment"><div class="line"><a id="l00001" name="l00001"></a><span class="lineno">    1</span><span class="comment">// =============================================================================</span></div>
<div class="line"><a id="l00002" name="l00002"></a><span class="lineno">    2</span><span class="comment">//</span></div>
<div class="line"><a id="l00003" name="l00003"></a><span class="lineno">    3</span><span class="comment">// Based on code from:</span></div>
<div class="line"><a id="l00004" name="l00004"></a><span class="lineno">    4</span><span class="comment">//    * 8086tiny: a tiny, highly functional, highly portable PC emulator/VM</span></div>
<div class="line"><a id="l00005" name="l00005"></a><span class="lineno">    5</span><span class="comment">//      Copyright 2013-14, Adrian Cable (adrian.cable@gmail.com) - http://www.megalith.co.uk/8086tiny</span></div>
<div class="line"><a id="l00006" name="l00006"></a><span class="lineno">    6</span><span class="comment">//    * 8086tiny plus Revision 1.34 - Copyright 2014 Julian Olds - https://jaybertsoftware.weebly.com/8086-tiny-plus.html</span></div>
<div class="line"><a id="l00007" name="l00007"></a><span class="lineno">    7</span><span class="comment">//</span></div>
<div class="line"><a id="l00008" name="l00008"></a><span class="lineno">    8</span><span class="comment">// This work is licensed under the MIT License. See included LICENSE.TXT.</span></div>
<div class="line"><a id="l00009" name="l00009"></a><span class="lineno">    9</span><span class="comment">//</span></div>
<div class="line"><a id="l00010" name="l00010"></a><span class="lineno">   10</span><span class="comment">// Changes by Fabrizio Di Vittorio</span></div>
<div class="line"><a id="l00011" name="l00011"></a><span class="lineno">   11</span><span class="comment">//   - some heavy optimizations</span></div>
<div class="line"><a id="l00012" name="l00012"></a><span class="lineno">   12</span><span class="comment">//   - bug fixes on several instructions (HLT, divide by zero interrupt, ROL, ROR, RCL, RCR, SHL, SHR, DAA, DAS)</span></div>
<div class="line"><a id="l00013" name="l00013"></a><span class="lineno">   13</span><span class="comment">//   - expanded macros</span></div>
<div class="line"><a id="l00014" name="l00014"></a><span class="lineno">   14</span><span class="comment">//   - removed redundant code resulted from macro expansions</span></div>
<div class="line"><a id="l00015" name="l00015"></a><span class="lineno">   15</span><span class="comment">//   - moved Flags out of registers file</span></div>
<div class="line"><a id="l00016" name="l00016"></a><span class="lineno">   16</span><span class="comment">//   - moved some static variables into auto function vars</span></div>
<div class="line"><a id="l00017" name="l00017"></a><span class="lineno">   17</span><span class="comment">//   - moved decodes tables from BIOS to C code</span></div>
<div class="line"><a id="l00018" name="l00018"></a><span class="lineno">   18</span><span class="comment">//   - emulator commands executed as INT instead of custom CPU opcodes</span></div>
<div class="line"><a id="l00019" name="l00019"></a><span class="lineno">   19</span><span class="comment">//   - reset to 0xffff:0000 as real 8086</span></div>
<div class="line"><a id="l00020" name="l00020"></a><span class="lineno">   20</span><span class="comment">//   - LEA, removed mod=11 option</span></div>
<div class="line"><a id="l00021" name="l00021"></a><span class="lineno">   21</span><span class="comment">//   - registers moved to different area</span></div>
<div class="line"><a id="l00022" name="l00022"></a><span class="lineno">   22</span><span class="comment">//   - memory read/write no more direct but by callbacks</span></div>
<div class="line"><a id="l00023" name="l00023"></a><span class="lineno">   23</span> </div>
<div class="line"><a id="l00024" name="l00024"></a><span class="lineno">   24</span> </div>
<div class="line"><a id="l00025" name="l00025"></a><span class="lineno">   25</span> </div>
<div class="line"><a id="l00026" name="l00026"></a><span class="lineno">   26</span><span class="preprocessor">#include &lt;stdio.h&gt;</span></div>
<div class="line"><a id="l00027" name="l00027"></a><span class="lineno">   27</span><span class="preprocessor">#include &lt;string.h&gt;</span></div>
<div class="line"><a id="l00028" name="l00028"></a><span class="lineno">   28</span> </div>
<div class="line"><a id="l00029" name="l00029"></a><span class="lineno">   29</span><span class="preprocessor">#include &quot;i8086.h&quot;</span></div>
<div class="line"><a id="l00030" name="l00030"></a><span class="lineno">   30</span> </div>
<div class="line"><a id="l00031" name="l00031"></a><span class="lineno">   31</span> </div>
<div class="line"><a id="l00032" name="l00032"></a><span class="lineno">   32</span><span class="keyword">namespace </span>fabgl {</div>
<div class="line"><a id="l00033" name="l00033"></a><span class="lineno">   33</span> </div>
<div class="line"><a id="l00034" name="l00034"></a><span class="lineno">   34</span> </div>
<div class="line"><a id="l00035" name="l00035"></a><span class="lineno">   35</span> </div>
<div class="line"><a id="l00036" name="l00036"></a><span class="lineno">   36</span><span class="preprocessor">#pragma GCC optimize (&quot;O3&quot;</span>)</div>
<div class="line"><a id="l00037" name="l00037"></a><span class="lineno">   37</span> </div>
<div class="line"><a id="l00038" name="l00038"></a><span class="lineno">   38</span><span class="preprocessor">#if FABGL_ESP_IDF_VERSION &gt; FABGL_ESP_IDF_VERSION_VAL(3, 3, 5)</span></div>
<div class="line"><a id="l00039" name="l00039"></a><span class="lineno">   39</span><span class="preprocessor">  #pragma GCC diagnostic ignored &quot;-Wimplicit-fallthrough&quot;</span></div>
<div class="line"><a id="l00040" name="l00040"></a><span class="lineno">   40</span><span class="preprocessor">#endif</span></div>
<div class="line"><a id="l00041" name="l00041"></a><span class="lineno">   41</span> </div>
<div class="line"><a id="l00042" name="l00042"></a><span class="lineno">   42</span> </div>
<div class="line"><a id="l00043" name="l00043"></a><span class="lineno">   43</span><span class="preprocessor">#define VIDEOMEM_START 0xA0000</span></div>
<div class="line"><a id="l00044" name="l00044"></a><span class="lineno">   44</span><span class="preprocessor">#define VIDEOMEM_END   0xC0000</span></div>
<div class="line"><a id="l00045" name="l00045"></a><span class="lineno">   45</span> </div>
<div class="line"><a id="l00046" name="l00046"></a><span class="lineno">   46</span> </div>
<div class="line"><a id="l00047" name="l00047"></a><span class="lineno">   47</span><span class="comment">// 16-bit register decodes</span></div>
<div class="line"><a id="l00048" name="l00048"></a><span class="lineno">   48</span> </div>
<div class="line"><a id="l00049" name="l00049"></a><span class="lineno">   49</span><span class="preprocessor">#define REG_AX                                   0</span></div>
<div class="line"><a id="l00050" name="l00050"></a><span class="lineno">   50</span><span class="preprocessor">#define REG_CX                                   1</span></div>
<div class="line"><a id="l00051" name="l00051"></a><span class="lineno">   51</span><span class="preprocessor">#define REG_DX                                   2</span></div>
<div class="line"><a id="l00052" name="l00052"></a><span class="lineno">   52</span><span class="preprocessor">#define REG_BX                                   3</span></div>
<div class="line"><a id="l00053" name="l00053"></a><span class="lineno">   53</span><span class="preprocessor">#define REG_SP                                   4</span></div>
<div class="line"><a id="l00054" name="l00054"></a><span class="lineno">   54</span><span class="preprocessor">#define REG_BP                                   5</span></div>
<div class="line"><a id="l00055" name="l00055"></a><span class="lineno">   55</span><span class="preprocessor">#define REG_SI                                   6</span></div>
<div class="line"><a id="l00056" name="l00056"></a><span class="lineno">   56</span><span class="preprocessor">#define REG_DI                                   7</span></div>
<div class="line"><a id="l00057" name="l00057"></a><span class="lineno">   57</span> </div>
<div class="line"><a id="l00058" name="l00058"></a><span class="lineno">   58</span><span class="preprocessor">#define REG_ES                                   8</span></div>
<div class="line"><a id="l00059" name="l00059"></a><span class="lineno">   59</span><span class="preprocessor">#define REG_CS                                   9</span></div>
<div class="line"><a id="l00060" name="l00060"></a><span class="lineno">   60</span><span class="preprocessor">#define REG_SS                                   10</span></div>
<div class="line"><a id="l00061" name="l00061"></a><span class="lineno">   61</span><span class="preprocessor">#define REG_DS                                   11</span></div>
<div class="line"><a id="l00062" name="l00062"></a><span class="lineno">   62</span> </div>
<div class="line"><a id="l00063" name="l00063"></a><span class="lineno">   63</span><span class="preprocessor">#define REG_ZERO                                 12</span></div>
<div class="line"><a id="l00064" name="l00064"></a><span class="lineno">   64</span><span class="preprocessor">#define REG_SCRATCH                              13</span></div>
<div class="line"><a id="l00065" name="l00065"></a><span class="lineno">   65</span> </div>
<div class="line"><a id="l00066" name="l00066"></a><span class="lineno">   66</span><span class="preprocessor">#define REG_TMP                                  15</span></div>
<div class="line"><a id="l00067" name="l00067"></a><span class="lineno">   67</span> </div>
<div class="line"><a id="l00068" name="l00068"></a><span class="lineno">   68</span> </div>
<div class="line"><a id="l00069" name="l00069"></a><span class="lineno">   69</span><span class="comment">// 8-bit register decodes</span></div>
<div class="line"><a id="l00070" name="l00070"></a><span class="lineno">   70</span><span class="preprocessor">#define REG_AL                                   0</span></div>
<div class="line"><a id="l00071" name="l00071"></a><span class="lineno">   71</span><span class="preprocessor">#define REG_AH                                   1</span></div>
<div class="line"><a id="l00072" name="l00072"></a><span class="lineno">   72</span><span class="preprocessor">#define REG_CL                                   2</span></div>
<div class="line"><a id="l00073" name="l00073"></a><span class="lineno">   73</span><span class="preprocessor">#define REG_CH                                   3</span></div>
<div class="line"><a id="l00074" name="l00074"></a><span class="lineno">   74</span><span class="preprocessor">#define REG_DL                                   4</span></div>
<div class="line"><a id="l00075" name="l00075"></a><span class="lineno">   75</span><span class="preprocessor">#define REG_DH                                   5</span></div>
<div class="line"><a id="l00076" name="l00076"></a><span class="lineno">   76</span><span class="preprocessor">#define REG_BL                                   6</span></div>
<div class="line"><a id="l00077" name="l00077"></a><span class="lineno">   77</span><span class="preprocessor">#define REG_BH                                   7</span></div>
<div class="line"><a id="l00078" name="l00078"></a><span class="lineno">   78</span> </div>
<div class="line"><a id="l00079" name="l00079"></a><span class="lineno">   79</span> </div>
<div class="line"><a id="l00080" name="l00080"></a><span class="lineno">   80</span><span class="comment">// FLAGS</span></div>
<div class="line"><a id="l00081" name="l00081"></a><span class="lineno">   81</span> </div>
<div class="line"><a id="l00082" name="l00082"></a><span class="lineno">   82</span><span class="preprocessor">#define CF_ADDR 0</span></div>
<div class="line"><a id="l00083" name="l00083"></a><span class="lineno">   83</span><span class="preprocessor">#define PF_ADDR 1</span></div>
<div class="line"><a id="l00084" name="l00084"></a><span class="lineno">   84</span><span class="preprocessor">#define AF_ADDR 2</span></div>
<div class="line"><a id="l00085" name="l00085"></a><span class="lineno">   85</span><span class="preprocessor">#define ZF_ADDR 3</span></div>
<div class="line"><a id="l00086" name="l00086"></a><span class="lineno">   86</span><span class="preprocessor">#define SF_ADDR 4</span></div>
<div class="line"><a id="l00087" name="l00087"></a><span class="lineno">   87</span><span class="preprocessor">#define TF_ADDR 5</span></div>
<div class="line"><a id="l00088" name="l00088"></a><span class="lineno">   88</span><span class="preprocessor">#define IF_ADDR 6</span></div>
<div class="line"><a id="l00089" name="l00089"></a><span class="lineno">   89</span><span class="preprocessor">#define DF_ADDR 7</span></div>
<div class="line"><a id="l00090" name="l00090"></a><span class="lineno">   90</span><span class="preprocessor">#define OF_ADDR 8</span></div>
<div class="line"><a id="l00091" name="l00091"></a><span class="lineno">   91</span><span class="preprocessor">#define XX_ADDR 9</span></div>
<div class="line"><a id="l00092" name="l00092"></a><span class="lineno">   92</span> </div>
<div class="line"><a id="l00093" name="l00093"></a><span class="lineno">   93</span><span class="preprocessor">#define FLAG_CF                                  (flags[CF_ADDR])</span></div>
<div class="line"><a id="l00094" name="l00094"></a><span class="lineno">   94</span><span class="preprocessor">#define FLAG_PF                                  (flags[PF_ADDR])</span></div>
<div class="line"><a id="l00095" name="l00095"></a><span class="lineno">   95</span><span class="preprocessor">#define FLAG_AF                                  (flags[AF_ADDR])</span></div>
<div class="line"><a id="l00096" name="l00096"></a><span class="lineno">   96</span><span class="preprocessor">#define FLAG_ZF                                  (flags[ZF_ADDR])</span></div>
<div class="line"><a id="l00097" name="l00097"></a><span class="lineno">   97</span><span class="preprocessor">#define FLAG_SF                                  (flags[SF_ADDR])</span></div>
<div class="line"><a id="l00098" name="l00098"></a><span class="lineno">   98</span><span class="preprocessor">#define FLAG_TF                                  (flags[TF_ADDR])</span></div>
<div class="line"><a id="l00099" name="l00099"></a><span class="lineno">   99</span><span class="preprocessor">#define FLAG_IF                                  (flags[IF_ADDR])</span></div>
<div class="line"><a id="l00100" name="l00100"></a><span class="lineno">  100</span><span class="preprocessor">#define FLAG_DF                                  (flags[DF_ADDR])</span></div>
<div class="line"><a id="l00101" name="l00101"></a><span class="lineno">  101</span><span class="preprocessor">#define FLAG_OF                                  (flags[OF_ADDR])</span></div>
<div class="line"><a id="l00102" name="l00102"></a><span class="lineno">  102</span> </div>
<div class="line"><a id="l00103" name="l00103"></a><span class="lineno">  103</span> </div>
<div class="line"><a id="l00104" name="l00104"></a><span class="lineno">  104</span> </div>
<div class="line"><a id="l00105" name="l00105"></a><span class="lineno">  105</span><span class="comment">// Global variable definitions</span></div>
<div class="line"><a id="l00106" name="l00106"></a><span class="lineno">  106</span><span class="keyword">static</span> uint8_t    regs[48];</div>
<div class="line"><a id="l00107" name="l00107"></a><span class="lineno">  107</span><span class="keyword">static</span> uint8_t    flags[10];</div>
<div class="line"><a id="l00108" name="l00108"></a><span class="lineno">  108</span><span class="keyword">static</span> int32_t    regs_offset;</div>
<div class="line"><a id="l00109" name="l00109"></a><span class="lineno">  109</span><span class="keyword">static</span> uint8_t    * regs8, i_mod_size, i_d, i_w, raw_opcode_id, xlat_opcode_id, extra, rep_mode, seg_override_en, rep_override_en;</div>
<div class="line"><a id="l00110" name="l00110"></a><span class="lineno">  110</span><span class="keyword">static</span> uint16_t   * regs16, reg_ip, seg_override;</div>
<div class="line"><a id="l00111" name="l00111"></a><span class="lineno">  111</span><span class="keyword">static</span> uint32_t   op_source, op_dest, set_flags_type;</div>
<div class="line"><a id="l00112" name="l00112"></a><span class="lineno">  112</span><span class="keyword">static</span> int32_t    op_to_addr, op_from_addr;</div>
<div class="line"><a id="l00113" name="l00113"></a><span class="lineno">  113</span> </div>
<div class="line"><a id="l00114" name="l00114"></a><span class="lineno">  114</span> </div>
<div class="line"><a id="l00115" name="l00115"></a><span class="lineno">  115</span><span class="keywordtype">void</span> *                    i8086::s_context;</div>
<div class="line"><a id="l00116" name="l00116"></a><span class="lineno">  116</span>i8086::ReadPort           i8086::s_readPort;</div>
<div class="line"><a id="l00117" name="l00117"></a><span class="lineno">  117</span>i8086::WritePort          i8086::s_writePort;</div>
<div class="line"><a id="l00118" name="l00118"></a><span class="lineno">  118</span>i8086::WriteVideoMemory8  i8086::s_writeVideoMemory8;</div>
<div class="line"><a id="l00119" name="l00119"></a><span class="lineno">  119</span>i8086::WriteVideoMemory16 i8086::s_writeVideoMemory16;</div>
<div class="line"><a id="l00120" name="l00120"></a><span class="lineno">  120</span>i8086::ReadVideoMemory8   i8086::s_readVideoMemory8;</div>
<div class="line"><a id="l00121" name="l00121"></a><span class="lineno">  121</span>i8086::ReadVideoMemory16  i8086::s_readVideoMemory16;</div>
<div class="line"><a id="l00122" name="l00122"></a><span class="lineno">  122</span>i8086::Interrupt          i8086::s_interrupt;</div>
<div class="line"><a id="l00123" name="l00123"></a><span class="lineno">  123</span> </div>
<div class="line"><a id="l00124" name="l00124"></a><span class="lineno">  124</span>uint8_t *                 i8086::s_memory;</div>
<div class="line"><a id="l00125" name="l00125"></a><span class="lineno">  125</span><span class="keywordtype">bool</span>                      i8086::s_pendingIRQ;</div>
<div class="line"><a id="l00126" name="l00126"></a><span class="lineno">  126</span>uint8_t                   i8086::s_pendingIRQIndex;</div>
<div class="line"><a id="l00127" name="l00127"></a><span class="lineno">  127</span><span class="keywordtype">bool</span>                      i8086::s_halted;</div>
<div class="line"><a id="l00128" name="l00128"></a><span class="lineno">  128</span> </div>
<div class="line"><a id="l00129" name="l00129"></a><span class="lineno">  129</span> </div>
<div class="line"><a id="l00130" name="l00130"></a><span class="lineno">  130</span> </div>
<div class="line"><a id="l00131" name="l00131"></a><span class="lineno">  131</span> </div>
<div class="line"><a id="l00132" name="l00132"></a><span class="lineno">  132</span><span class="comment">// Table 0: R/M mode 1/2 &quot;register 1&quot; lookup</span></div>
<div class="line"><a id="l00133" name="l00133"></a><span class="lineno">  133</span><span class="keyword">static</span> uint8_t rm_mode12_reg1[]  = { 3, 3, 5, 5, 6, 7, 5, 3 };</div>
<div class="line"><a id="l00134" name="l00134"></a><span class="lineno">  134</span> </div>
<div class="line"><a id="l00135" name="l00135"></a><span class="lineno">  135</span><span class="comment">// Table 1: R/M mode 1/2 &quot;register 2&quot; lookup</span></div>
<div class="line"><a id="l00136" name="l00136"></a><span class="lineno">  136</span><span class="comment">// Table 5: R/M mode 0 &quot;register 2&quot; lookup</span></div>
<div class="line"><a id="l00137" name="l00137"></a><span class="lineno">  137</span><span class="keyword">static</span> uint8_t rm_mode012_reg2[] = { 6, 7, 6, 7, 12, 12, 12, 12 };</div>
<div class="line"><a id="l00138" name="l00138"></a><span class="lineno">  138</span> </div>
<div class="line"><a id="l00139" name="l00139"></a><span class="lineno">  139</span><span class="comment">// Table 2: R/M mode 1/2 &quot;DISP multiplier&quot; lookup</span></div>
<div class="line"><a id="l00140" name="l00140"></a><span class="lineno">  140</span><span class="keyword">static</span> uint8_t rm_mode12_disp[]  = { 1, 1, 1, 1, 1, 1, 1, 1 };</div>
<div class="line"><a id="l00141" name="l00141"></a><span class="lineno">  141</span> </div>
<div class="line"><a id="l00142" name="l00142"></a><span class="lineno">  142</span><span class="comment">// Table 3: R/M mode 1/2 &quot;default segment&quot; lookup</span></div>
<div class="line"><a id="l00143" name="l00143"></a><span class="lineno">  143</span><span class="keyword">static</span> uint8_t rm_mode12_dfseg[] = { 11, 11, 10, 10, 11, 11, 10, 11 };</div>
<div class="line"><a id="l00144" name="l00144"></a><span class="lineno">  144</span> </div>
<div class="line"><a id="l00145" name="l00145"></a><span class="lineno">  145</span><span class="comment">// Table 4: R/M mode 0 &quot;register 1&quot; lookup</span></div>
<div class="line"><a id="l00146" name="l00146"></a><span class="lineno">  146</span><span class="keyword">static</span> uint8_t rm_mode0_reg1[]   = { 3, 3, 5, 5, 6, 7, 12, 3 };</div>
<div class="line"><a id="l00147" name="l00147"></a><span class="lineno">  147</span> </div>
<div class="line"><a id="l00148" name="l00148"></a><span class="lineno">  148</span><span class="comment">// Table 6: R/M mode 0 &quot;DISP multiplier&quot; lookup</span></div>
<div class="line"><a id="l00149" name="l00149"></a><span class="lineno">  149</span><span class="keyword">static</span> uint8_t rm_mode0_disp[]   = { 0, 0, 0, 0, 0, 0, 1, 0 };</div>
<div class="line"><a id="l00150" name="l00150"></a><span class="lineno">  150</span> </div>
<div class="line"><a id="l00151" name="l00151"></a><span class="lineno">  151</span><span class="comment">// Table 7: R/M mode 0 &quot;default segment&quot; lookup</span></div>
<div class="line"><a id="l00152" name="l00152"></a><span class="lineno">  152</span><span class="keyword">static</span> uint8_t rm_mode0_dfseg[]  = { 11, 11, 10, 10, 11, 11, 11, 11 };</div>
<div class="line"><a id="l00153" name="l00153"></a><span class="lineno">  153</span> </div>
<div class="line"><a id="l00154" name="l00154"></a><span class="lineno">  154</span><span class="comment">// Table 8: Translation of raw opcode index (&quot;Raw ID&quot;) to function number (&quot;Xlat&#39;d ID&quot;)</span></div>
<div class="line"><a id="l00155" name="l00155"></a><span class="lineno">  155</span><span class="keyword">static</span> uint8_t xlat_ids[] = {   9,  9,  9,  9,  7,  7, 25, 26,  9,  9,  9,  9,  7,  7, 25, 50,</div>
<div class="line"><a id="l00156" name="l00156"></a><span class="lineno">  156</span>                                9,  9,  9,  9,  7,  7, 25, 26,  9,  9,  9,  9,  7,  7, 25, 26,</div>
<div class="line"><a id="l00157" name="l00157"></a><span class="lineno">  157</span>                                9,  9,  9,  9,  7,  7, 27, 28,  9,  9,  9,  9,  7,  7, 27, 28,</div>
<div class="line"><a id="l00158" name="l00158"></a><span class="lineno">  158</span>                                9,  9,  9,  9,  7,  7, 27, 29,  9,  9,  9,  9,  7,  7, 27, 29,</div>
<div class="line"><a id="l00159" name="l00159"></a><span class="lineno">  159</span>                                2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,</div>
<div class="line"><a id="l00160" name="l00160"></a><span class="lineno">  160</span>                                3,  3,  3,  3,  3,  3,  3,  3,  4,  4,  4,  4,  4,  4,  4,  4,</div>
<div class="line"><a id="l00161" name="l00161"></a><span class="lineno">  161</span>                                53, 54, 55, 70, 71, 71, 72, 72, 56, 58, 57, 58, 59, 59, 60, 60,</div>
<div class="line"><a id="l00162" name="l00162"></a><span class="lineno">  162</span>                                0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,</div>
<div class="line"><a id="l00163" name="l00163"></a><span class="lineno">  163</span>                                8,  8,  8,  8, 15, 15, 24, 24,  9,  9,  9,  9, 10, 10, 10, 10,</div>
<div class="line"><a id="l00164" name="l00164"></a><span class="lineno">  164</span>                                16, 16, 16, 16, 16, 16, 16, 16, 30, 31, 32, 69, 33, 34, 35, 36,</div>
<div class="line"><a id="l00165" name="l00165"></a><span class="lineno">  165</span>                                11, 11, 11, 11, 17, 17, 18, 18, 47, 47, 17, 17, 17, 17, 18, 18,</div>
<div class="line"><a id="l00166" name="l00166"></a><span class="lineno">  166</span>                                1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,</div>
<div class="line"><a id="l00167" name="l00167"></a><span class="lineno">  167</span>                                12, 12, 19, 19, 37, 37, 20, 20, 51, 52, 19, 19, 38, 39, 40, 19,</div>
<div class="line"><a id="l00168" name="l00168"></a><span class="lineno">  168</span>                                12, 12, 12, 12, 41, 42, 43, 44, 69, 69, 69, 69, 69, 69, 69, 69,</div>
<div class="line"><a id="l00169" name="l00169"></a><span class="lineno">  169</span>                                13, 13, 13, 13, 21, 21, 22, 22, 14, 14, 14, 14, 21, 21, 22, 22,</div>
<div class="line"><a id="l00170" name="l00170"></a><span class="lineno">  170</span>                                48,  0, 23, 23, 49, 45,  6,  6, 46, 46, 46, 46, 46, 46,  5,  5 };</div>
<div class="line"><a id="l00171" name="l00171"></a><span class="lineno">  171</span> </div>
<div class="line"><a id="l00172" name="l00172"></a><span class="lineno">  172</span><span class="comment">// Table 9: Translation of Raw ID to Extra Data</span></div>
<div class="line"><a id="l00173" name="l00173"></a><span class="lineno">  173</span><span class="keyword">static</span> uint8_t ex_data[] = {  0,  0,  0,  0,  0,  0,  8,  8,  1,  1,  1,  1,  1,  1,  9, 36,</div>
<div class="line"><a id="l00174" name="l00174"></a><span class="lineno">  174</span>                              2,  2,  2,  2,  2,  2, 10, 10,  3,  3,  3,  3,  3,  3, 11, 11,</div>
<div class="line"><a id="l00175" name="l00175"></a><span class="lineno">  175</span>                              4,  4,  4,  4,  4,  4,  8,  0,  5,  5,  5,  5,  5,  5,  9,  1,</div>
<div class="line"><a id="l00176" name="l00176"></a><span class="lineno">  176</span>                              6,  6,  6,  6,  6,  6, 10,  2,  7,  7,  7,  7,  7,  7, 11,  0,</div>
<div class="line"><a id="l00177" name="l00177"></a><span class="lineno">  177</span>                              0,  0,  0,  0,  0,  0,  0,  0,  1,  1,  1,  1,  1,  1,  1,  1,</div>
<div class="line"><a id="l00178" name="l00178"></a><span class="lineno">  178</span>                              0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,</div>
<div class="line"><a id="l00179" name="l00179"></a><span class="lineno">  179</span>                              0,  0, 21, 21, 21, 21, 21, 21,  0,  0,  0,  0, 21, 21, 21, 21,</div>
<div class="line"><a id="l00180" name="l00180"></a><span class="lineno">  180</span>                              21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,</div>
<div class="line"><a id="l00181" name="l00181"></a><span class="lineno">  181</span>                              0,  0,  0,  0,  0,  0,  0,  0,  8,  8,  8,  8, 12, 12, 12, 12,</div>
<div class="line"><a id="l00182" name="l00182"></a><span class="lineno">  182</span>                              0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0, 255, 0,</div>
<div class="line"><a id="l00183" name="l00183"></a><span class="lineno">  183</span>                              0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  1,  1,  2,  2,  1,  1,</div>
<div class="line"><a id="l00184" name="l00184"></a><span class="lineno">  184</span>                              0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,</div>
<div class="line"><a id="l00185" name="l00185"></a><span class="lineno">  185</span>                              1,  1,  0,  0, 16, 22,  0,  0,  0,  0,  1,  1,  0, 255, 48, 2,</div>
<div class="line"><a id="l00186" name="l00186"></a><span class="lineno">  186</span>                              0,  0,  0,  0, 255, 255, 40, 11, 3, 3,  3,  3,  3,  3,  3,  3,</div>
<div class="line"><a id="l00187" name="l00187"></a><span class="lineno">  187</span>                              43, 43, 43, 43,  0,  0,  0,  0,  0,  0,  0,  0,  1,  1,  1,  1,</div>
<div class="line"><a id="l00188" name="l00188"></a><span class="lineno">  188</span>                              1, 21,  0,  0,  2, 40, 21, 21, 80, 81, 92, 93, 94, 95,  0,  0 };</div>
<div class="line"><a id="l00189" name="l00189"></a><span class="lineno">  189</span> </div>
<div class="line"><a id="l00190" name="l00190"></a><span class="lineno">  190</span><span class="comment">// Table 10: How each Raw ID sets the flags (bit 1 = sets SZP, bit 2 = sets AF/OF for arithmetic, bit 3 = sets OF/CF for logic)</span></div>
<div class="line"><a id="l00191" name="l00191"></a><span class="lineno">  191</span><span class="keyword">static</span> uint8_t std_flags[] = {  3, 3, 3, 3, 3, 3, 0, 0, 5, 5, 5, 5, 5, 5, 0, 0,</div>
<div class="line"><a id="l00192" name="l00192"></a><span class="lineno">  192</span>                                1, 1, 1, 1, 1, 1, 0, 0, 1, 1, 1, 1, 1, 1, 0, 0,</div>
<div class="line"><a id="l00193" name="l00193"></a><span class="lineno">  193</span>                                5, 5, 5, 5, 5, 5, 0, 1, 3, 3, 3, 3, 3, 3, 0, 1,</div>
<div class="line"><a id="l00194" name="l00194"></a><span class="lineno">  194</span>                                5, 5, 5, 5, 5, 5, 0, 1, 3, 3, 3, 3, 3, 3, 0, 1,</div>
<div class="line"><a id="l00195" name="l00195"></a><span class="lineno">  195</span>                                1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,</div>
<div class="line"><a id="l00196" name="l00196"></a><span class="lineno">  196</span>                                0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,</div>
<div class="line"><a id="l00197" name="l00197"></a><span class="lineno">  197</span>                                0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,</div>
<div class="line"><a id="l00198" name="l00198"></a><span class="lineno">  198</span>                                0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,</div>
<div class="line"><a id="l00199" name="l00199"></a><span class="lineno">  199</span>                                1, 1, 1, 1, 5, 5, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,</div>
<div class="line"><a id="l00200" name="l00200"></a><span class="lineno">  200</span>                                0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,</div>
<div class="line"><a id="l00201" name="l00201"></a><span class="lineno">  201</span>                                0, 0, 0, 0, 0, 0, 0, 0, 5, 5, 0, 0, 0, 0, 0, 0,</div>
<div class="line"><a id="l00202" name="l00202"></a><span class="lineno">  202</span>                                0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,</div>
<div class="line"><a id="l00203" name="l00203"></a><span class="lineno">  203</span>                                0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,</div>
<div class="line"><a id="l00204" name="l00204"></a><span class="lineno">  204</span>                                0, 0, 0, 0, 5, 5, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,</div>
<div class="line"><a id="l00205" name="l00205"></a><span class="lineno">  205</span>                                0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,</div>
<div class="line"><a id="l00206" name="l00206"></a><span class="lineno">  206</span>                                0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };</div>
<div class="line"><a id="l00207" name="l00207"></a><span class="lineno">  207</span> </div>
<div class="line"><a id="l00208" name="l00208"></a><span class="lineno">  208</span><span class="comment">// Table 11: Parity flag loop-up table (256 entries)</span></div>
<div class="line"><a id="l00209" name="l00209"></a><span class="lineno">  209</span><span class="keyword">static</span> uint8_t parity[] = {   1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 0, 0, 1,</div>
<div class="line"><a id="l00210" name="l00210"></a><span class="lineno">  210</span>                              0, 1, 1, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 1, 1, 0,</div>
<div class="line"><a id="l00211" name="l00211"></a><span class="lineno">  211</span>                              0, 1, 1, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 1, 1, 0,</div>
<div class="line"><a id="l00212" name="l00212"></a><span class="lineno">  212</span>                              1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 0, 0, 1,</div>
<div class="line"><a id="l00213" name="l00213"></a><span class="lineno">  213</span>                              0, 1, 1, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 1, 1, 0,</div>
<div class="line"><a id="l00214" name="l00214"></a><span class="lineno">  214</span>                              1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 0, 0, 1,</div>
<div class="line"><a id="l00215" name="l00215"></a><span class="lineno">  215</span>                              1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 0, 0, 1,</div>
<div class="line"><a id="l00216" name="l00216"></a><span class="lineno">  216</span>                              0, 1, 1, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 1, 1, 0,</div>
<div class="line"><a id="l00217" name="l00217"></a><span class="lineno">  217</span>                              0, 1, 1, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 1, 1, 0,</div>
<div class="line"><a id="l00218" name="l00218"></a><span class="lineno">  218</span>                              1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 0, 0, 1,</div>
<div class="line"><a id="l00219" name="l00219"></a><span class="lineno">  219</span>                              1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 0, 0, 1,</div>
<div class="line"><a id="l00220" name="l00220"></a><span class="lineno">  220</span>                              0, 1, 1, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 1, 1, 0,</div>
<div class="line"><a id="l00221" name="l00221"></a><span class="lineno">  221</span>                              1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 0, 0, 1,</div>
<div class="line"><a id="l00222" name="l00222"></a><span class="lineno">  222</span>                              0, 1, 1, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 1, 1, 0,</div>
<div class="line"><a id="l00223" name="l00223"></a><span class="lineno">  223</span>                              0, 1, 1, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 1, 1, 0,</div>
<div class="line"><a id="l00224" name="l00224"></a><span class="lineno">  224</span>                              1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 0, 0, 1 };</div>
<div class="line"><a id="l00225" name="l00225"></a><span class="lineno">  225</span> </div>
<div class="line"><a id="l00226" name="l00226"></a><span class="lineno">  226</span><span class="comment">// Table 12: Translation of Raw ID to base instruction size (bytes)</span></div>
<div class="line"><a id="l00227" name="l00227"></a><span class="lineno">  227</span><span class="keyword">static</span> uint8_t base_size[] = {  2, 2, 2, 2, 1, 1, 1, 1, 2, 2, 2, 2, 1, 1, 1, 2,</div>
<div class="line"><a id="l00228" name="l00228"></a><span class="lineno">  228</span>                                2, 2, 2, 2, 1, 1, 1, 1, 2, 2, 2, 2, 1, 1, 1, 1,</div>
<div class="line"><a id="l00229" name="l00229"></a><span class="lineno">  229</span>                                2, 2, 2, 2, 1, 1, 1, 1, 2, 2, 2, 2, 1, 1, 1, 1,</div>
<div class="line"><a id="l00230" name="l00230"></a><span class="lineno">  230</span>                                2, 2, 2, 2, 1, 1, 1, 1, 2, 2, 2, 2, 1, 1, 1, 1,</div>
<div class="line"><a id="l00231" name="l00231"></a><span class="lineno">  231</span>                                1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,</div>
<div class="line"><a id="l00232" name="l00232"></a><span class="lineno">  232</span>                                1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,</div>
<div class="line"><a id="l00233" name="l00233"></a><span class="lineno">  233</span>                                1, 1, 1, 1, 1, 1, 1, 1, 3, 1, 2, 1, 1, 1, 1, 1,</div>
<div class="line"><a id="l00234" name="l00234"></a><span class="lineno">  234</span>                                2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,</div>
<div class="line"><a id="l00235" name="l00235"></a><span class="lineno">  235</span>                                2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,</div>
<div class="line"><a id="l00236" name="l00236"></a><span class="lineno">  236</span>                                1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1,</div>
<div class="line"><a id="l00237" name="l00237"></a><span class="lineno">  237</span>                                3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,</div>
<div class="line"><a id="l00238" name="l00238"></a><span class="lineno">  238</span>                                1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,</div>
<div class="line"><a id="l00239" name="l00239"></a><span class="lineno">  239</span>                                3, 3, 0, 0, 2, 2, 2, 2, 4, 1, 0, 0, 0, 0, 0, 0,</div>
<div class="line"><a id="l00240" name="l00240"></a><span class="lineno">  240</span>                                2, 2, 2, 2, 2, 2, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2,</div>
<div class="line"><a id="l00241" name="l00241"></a><span class="lineno">  241</span>                                2, 2, 2, 2, 2, 2, 2, 2, 0, 0, 0, 0, 1, 1, 1, 1,</div>
<div class="line"><a id="l00242" name="l00242"></a><span class="lineno">  242</span>                                1, 2, 1, 1, 1, 1, 2, 2, 1, 1, 1, 1, 1, 1, 2, 2 };</div>
<div class="line"><a id="l00243" name="l00243"></a><span class="lineno">  243</span> </div>
<div class="line"><a id="l00244" name="l00244"></a><span class="lineno">  244</span><span class="comment">// Table 13: Translation of Raw ID to i_w size adder yes/no</span></div>
<div class="line"><a id="l00245" name="l00245"></a><span class="lineno">  245</span><span class="keyword">static</span> uint8_t i_w_adder[] = {  0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0,</div>
<div class="line"><a id="l00246" name="l00246"></a><span class="lineno">  246</span>                                0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0,</div>
<div class="line"><a id="l00247" name="l00247"></a><span class="lineno">  247</span>                                0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0,</div>
<div class="line"><a id="l00248" name="l00248"></a><span class="lineno">  248</span>                                0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0,</div>
<div class="line"><a id="l00249" name="l00249"></a><span class="lineno">  249</span>                                0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,</div>
<div class="line"><a id="l00250" name="l00250"></a><span class="lineno">  250</span>                                0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,</div>
<div class="line"><a id="l00251" name="l00251"></a><span class="lineno">  251</span>                                0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0,</div>
<div class="line"><a id="l00252" name="l00252"></a><span class="lineno">  252</span>                                0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,</div>
<div class="line"><a id="l00253" name="l00253"></a><span class="lineno">  253</span>                                1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,</div>
<div class="line"><a id="l00254" name="l00254"></a><span class="lineno">  254</span>                                0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,</div>
<div class="line"><a id="l00255" name="l00255"></a><span class="lineno">  255</span>                                0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0,</div>
<div class="line"><a id="l00256" name="l00256"></a><span class="lineno">  256</span>                                1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,</div>
<div class="line"><a id="l00257" name="l00257"></a><span class="lineno">  257</span>                                0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0,</div>
<div class="line"><a id="l00258" name="l00258"></a><span class="lineno">  258</span>                                0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,</div>
<div class="line"><a id="l00259" name="l00259"></a><span class="lineno">  259</span>                                0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,</div>
<div class="line"><a id="l00260" name="l00260"></a><span class="lineno">  260</span>                                0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };</div>
<div class="line"><a id="l00261" name="l00261"></a><span class="lineno">  261</span> </div>
<div class="line"><a id="l00262" name="l00262"></a><span class="lineno">  262</span><span class="comment">// Table 14: Translation of Raw ID to i_mod size adder yes/no</span></div>
<div class="line"><a id="l00263" name="l00263"></a><span class="lineno">  263</span><span class="keyword">static</span> uint8_t i_mod_adder[] = {  1, 1, 1, 1, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0,</div>
<div class="line"><a id="l00264" name="l00264"></a><span class="lineno">  264</span>                                  1, 1, 1, 1, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0,</div>
<div class="line"><a id="l00265" name="l00265"></a><span class="lineno">  265</span>                                  1, 1, 1, 1, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0,</div>
<div class="line"><a id="l00266" name="l00266"></a><span class="lineno">  266</span>                                  1, 1, 1, 1, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0,</div>
<div class="line"><a id="l00267" name="l00267"></a><span class="lineno">  267</span>                                  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,</div>
<div class="line"><a id="l00268" name="l00268"></a><span class="lineno">  268</span>                                  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,</div>
<div class="line"><a id="l00269" name="l00269"></a><span class="lineno">  269</span>                                  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,</div>
<div class="line"><a id="l00270" name="l00270"></a><span class="lineno">  270</span>                                  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,</div>
<div class="line"><a id="l00271" name="l00271"></a><span class="lineno">  271</span>                                  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,</div>
<div class="line"><a id="l00272" name="l00272"></a><span class="lineno">  272</span>                                  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,</div>
<div class="line"><a id="l00273" name="l00273"></a><span class="lineno">  273</span>                                  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,</div>
<div class="line"><a id="l00274" name="l00274"></a><span class="lineno">  274</span>                                  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,</div>
<div class="line"><a id="l00275" name="l00275"></a><span class="lineno">  275</span>                                  1, 1, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0,</div>
<div class="line"><a id="l00276" name="l00276"></a><span class="lineno">  276</span>                                  1, 1, 1, 1, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1,</div>
<div class="line"><a id="l00277" name="l00277"></a><span class="lineno">  277</span>                                  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,</div>
<div class="line"><a id="l00278" name="l00278"></a><span class="lineno">  278</span>                                  0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1 };</div>
<div class="line"><a id="l00279" name="l00279"></a><span class="lineno">  279</span> </div>
<div class="line"><a id="l00280" name="l00280"></a><span class="lineno">  280</span><span class="comment">// Table 15: Jxx decode table A</span></div>
<div class="line"><a id="l00281" name="l00281"></a><span class="lineno">  281</span><span class="keyword">static</span> uint8_t jxx_dec_a[]   = { OF_ADDR, CF_ADDR, ZF_ADDR, CF_ADDR, SF_ADDR, PF_ADDR, XX_ADDR, XX_ADDR };</div>
<div class="line"><a id="l00282" name="l00282"></a><span class="lineno">  282</span> </div>
<div class="line"><a id="l00283" name="l00283"></a><span class="lineno">  283</span><span class="comment">// Table 16: Jxx decode table B</span></div>
<div class="line"><a id="l00284" name="l00284"></a><span class="lineno">  284</span><span class="keyword">static</span> uint8_t jxx_dec_b[]   = { XX_ADDR, XX_ADDR, XX_ADDR, ZF_ADDR, XX_ADDR, XX_ADDR, XX_ADDR, ZF_ADDR };</div>
<div class="line"><a id="l00285" name="l00285"></a><span class="lineno">  285</span> </div>
<div class="line"><a id="l00286" name="l00286"></a><span class="lineno">  286</span><span class="comment">// Table 17: Jxx decode table C</span></div>
<div class="line"><a id="l00287" name="l00287"></a><span class="lineno">  287</span><span class="keyword">static</span> uint8_t jxx_dec_c[]   = { XX_ADDR, XX_ADDR, XX_ADDR,XX_ADDR, XX_ADDR, XX_ADDR, SF_ADDR, SF_ADDR };</div>
<div class="line"><a id="l00288" name="l00288"></a><span class="lineno">  288</span> </div>
<div class="line"><a id="l00289" name="l00289"></a><span class="lineno">  289</span><span class="comment">// Table 18: Jxx decode table D</span></div>
<div class="line"><a id="l00290" name="l00290"></a><span class="lineno">  290</span><span class="keyword">static</span> uint8_t jxx_dec_d[]   = { XX_ADDR, XX_ADDR, XX_ADDR, XX_ADDR,XX_ADDR, XX_ADDR, OF_ADDR, OF_ADDR };</div>
<div class="line"><a id="l00291" name="l00291"></a><span class="lineno">  291</span> </div>
<div class="line"><a id="l00292" name="l00292"></a><span class="lineno">  292</span> </div>
<div class="line"><a id="l00293" name="l00293"></a><span class="lineno">  293</span><span class="keyword">static</span> uint8_t * instr_table_lookup[] = {    rm_mode12_reg1,    <span class="comment">// 0</span></div>
<div class="line"><a id="l00294" name="l00294"></a><span class="lineno">  294</span>                                             rm_mode012_reg2,   <span class="comment">// 1</span></div>
<div class="line"><a id="l00295" name="l00295"></a><span class="lineno">  295</span>                                             rm_mode12_disp,    <span class="comment">// 2</span></div>
<div class="line"><a id="l00296" name="l00296"></a><span class="lineno">  296</span>                                             rm_mode12_dfseg,   <span class="comment">// 3</span></div>
<div class="line"><a id="l00297" name="l00297"></a><span class="lineno">  297</span>                                             rm_mode0_reg1,     <span class="comment">// 4</span></div>
<div class="line"><a id="l00298" name="l00298"></a><span class="lineno">  298</span>                                             rm_mode012_reg2,   <span class="comment">// 5</span></div>
<div class="line"><a id="l00299" name="l00299"></a><span class="lineno">  299</span>                                             rm_mode0_disp,     <span class="comment">// 6</span></div>
<div class="line"><a id="l00300" name="l00300"></a><span class="lineno">  300</span>                                             rm_mode0_dfseg,    <span class="comment">// 7</span></div>
<div class="line"><a id="l00301" name="l00301"></a><span class="lineno">  301</span>                                             xlat_ids,          <span class="comment">// 8 TABLE_XLAT_OPCODE</span></div>
<div class="line"><a id="l00302" name="l00302"></a><span class="lineno">  302</span>                                             ex_data,           <span class="comment">// 9 TABLE_XLAT_SUBFUNCTION</span></div>
<div class="line"><a id="l00303" name="l00303"></a><span class="lineno">  303</span>                                             std_flags,         <span class="comment">// 10 TABLE_STD_FLAGS</span></div>
<div class="line"><a id="l00304" name="l00304"></a><span class="lineno">  304</span>                                             parity,            <span class="comment">// 11 TABLE_PARITY_FLAG</span></div>
<div class="line"><a id="l00305" name="l00305"></a><span class="lineno">  305</span>                                             base_size,         <span class="comment">// 12 TABLE_BASE_INST_SIZE</span></div>
<div class="line"><a id="l00306" name="l00306"></a><span class="lineno">  306</span>                                             i_w_adder,         <span class="comment">// 13 TABLE_I_W_SIZE</span></div>
<div class="line"><a id="l00307" name="l00307"></a><span class="lineno">  307</span>                                             i_mod_adder,       <span class="comment">// 14 TABLE_I_MOD_SIZE</span></div>
<div class="line"><a id="l00308" name="l00308"></a><span class="lineno">  308</span>                                          };</div>
<div class="line"><a id="l00309" name="l00309"></a><span class="lineno">  309</span> </div>
<div class="line"><a id="l00310" name="l00310"></a><span class="lineno">  310</span> </div>
<div class="line"><a id="l00311" name="l00311"></a><span class="lineno">  311</span> </div>
<div class="line"><a id="l00312" name="l00312"></a><span class="lineno">  312</span> </div>
<div class="line"><a id="l00313" name="l00313"></a><span class="lineno">  313</span><span class="keywordtype">void</span> i8086::setAL(uint8_t value)</div>
<div class="line"><a id="l00314" name="l00314"></a><span class="lineno">  314</span>{</div>
<div class="line"><a id="l00315" name="l00315"></a><span class="lineno">  315</span>  regs8[REG_AL] = value;</div>
<div class="line"><a id="l00316" name="l00316"></a><span class="lineno">  316</span>}</div>
<div class="line"><a id="l00317" name="l00317"></a><span class="lineno">  317</span> </div>
<div class="line"><a id="l00318" name="l00318"></a><span class="lineno">  318</span> </div>
<div class="line"><a id="l00319" name="l00319"></a><span class="lineno">  319</span><span class="keywordtype">void</span> i8086::setAH(uint8_t value)</div>
<div class="line"><a id="l00320" name="l00320"></a><span class="lineno">  320</span>{</div>
<div class="line"><a id="l00321" name="l00321"></a><span class="lineno">  321</span>  regs8[REG_AH] = value;</div>
<div class="line"><a id="l00322" name="l00322"></a><span class="lineno">  322</span>}</div>
<div class="line"><a id="l00323" name="l00323"></a><span class="lineno">  323</span> </div>
<div class="line"><a id="l00324" name="l00324"></a><span class="lineno">  324</span> </div>
<div class="line"><a id="l00325" name="l00325"></a><span class="lineno">  325</span>uint8_t i8086::AL()</div>
<div class="line"><a id="l00326" name="l00326"></a><span class="lineno">  326</span>{</div>
<div class="line"><a id="l00327" name="l00327"></a><span class="lineno">  327</span>  <span class="keywordflow">return</span> regs8[REG_AL];</div>
<div class="line"><a id="l00328" name="l00328"></a><span class="lineno">  328</span>}</div>
<div class="line"><a id="l00329" name="l00329"></a><span class="lineno">  329</span> </div>
<div class="line"><a id="l00330" name="l00330"></a><span class="lineno">  330</span> </div>
<div class="line"><a id="l00331" name="l00331"></a><span class="lineno">  331</span>uint8_t i8086::AH()</div>
<div class="line"><a id="l00332" name="l00332"></a><span class="lineno">  332</span>{</div>
<div class="line"><a id="l00333" name="l00333"></a><span class="lineno">  333</span>  <span class="keywordflow">return</span> regs8[REG_AH];</div>
<div class="line"><a id="l00334" name="l00334"></a><span class="lineno">  334</span>}</div>
<div class="line"><a id="l00335" name="l00335"></a><span class="lineno">  335</span> </div>
<div class="line"><a id="l00336" name="l00336"></a><span class="lineno">  336</span> </div>
<div class="line"><a id="l00337" name="l00337"></a><span class="lineno">  337</span><span class="keywordtype">void</span> i8086::setBL(uint8_t value)</div>
<div class="line"><a id="l00338" name="l00338"></a><span class="lineno">  338</span>{</div>
<div class="line"><a id="l00339" name="l00339"></a><span class="lineno">  339</span>  regs8[REG_BL] = value;</div>
<div class="line"><a id="l00340" name="l00340"></a><span class="lineno">  340</span>}</div>
<div class="line"><a id="l00341" name="l00341"></a><span class="lineno">  341</span> </div>
<div class="line"><a id="l00342" name="l00342"></a><span class="lineno">  342</span> </div>
<div class="line"><a id="l00343" name="l00343"></a><span class="lineno">  343</span><span class="keywordtype">void</span> i8086::setBH(uint8_t value)</div>
<div class="line"><a id="l00344" name="l00344"></a><span class="lineno">  344</span>{</div>
<div class="line"><a id="l00345" name="l00345"></a><span class="lineno">  345</span>  regs8[REG_BH] = value;</div>
<div class="line"><a id="l00346" name="l00346"></a><span class="lineno">  346</span>}</div>
<div class="line"><a id="l00347" name="l00347"></a><span class="lineno">  347</span> </div>
<div class="line"><a id="l00348" name="l00348"></a><span class="lineno">  348</span> </div>
<div class="line"><a id="l00349" name="l00349"></a><span class="lineno">  349</span>uint8_t i8086::BL()</div>
<div class="line"><a id="l00350" name="l00350"></a><span class="lineno">  350</span>{</div>
<div class="line"><a id="l00351" name="l00351"></a><span class="lineno">  351</span>  <span class="keywordflow">return</span> regs8[REG_BL];</div>
<div class="line"><a id="l00352" name="l00352"></a><span class="lineno">  352</span>}</div>
<div class="line"><a id="l00353" name="l00353"></a><span class="lineno">  353</span> </div>
<div class="line"><a id="l00354" name="l00354"></a><span class="lineno">  354</span> </div>
<div class="line"><a id="l00355" name="l00355"></a><span class="lineno">  355</span>uint8_t i8086::BH()</div>
<div class="line"><a id="l00356" name="l00356"></a><span class="lineno">  356</span>{</div>
<div class="line"><a id="l00357" name="l00357"></a><span class="lineno">  357</span>  <span class="keywordflow">return</span> regs8[REG_BH];</div>
<div class="line"><a id="l00358" name="l00358"></a><span class="lineno">  358</span>}</div>
<div class="line"><a id="l00359" name="l00359"></a><span class="lineno">  359</span> </div>
<div class="line"><a id="l00360" name="l00360"></a><span class="lineno">  360</span> </div>
<div class="line"><a id="l00361" name="l00361"></a><span class="lineno">  361</span><span class="keywordtype">void</span> i8086::setCL(uint8_t value)</div>
<div class="line"><a id="l00362" name="l00362"></a><span class="lineno">  362</span>{</div>
<div class="line"><a id="l00363" name="l00363"></a><span class="lineno">  363</span>  regs8[REG_CL] = value;</div>
<div class="line"><a id="l00364" name="l00364"></a><span class="lineno">  364</span>}</div>
<div class="line"><a id="l00365" name="l00365"></a><span class="lineno">  365</span> </div>
<div class="line"><a id="l00366" name="l00366"></a><span class="lineno">  366</span> </div>
<div class="line"><a id="l00367" name="l00367"></a><span class="lineno">  367</span><span class="keywordtype">void</span> i8086::setCH(uint8_t value)</div>
<div class="line"><a id="l00368" name="l00368"></a><span class="lineno">  368</span>{</div>
<div class="line"><a id="l00369" name="l00369"></a><span class="lineno">  369</span>  regs8[REG_CH] = value;</div>
<div class="line"><a id="l00370" name="l00370"></a><span class="lineno">  370</span>}</div>
<div class="line"><a id="l00371" name="l00371"></a><span class="lineno">  371</span> </div>
<div class="line"><a id="l00372" name="l00372"></a><span class="lineno">  372</span> </div>
<div class="line"><a id="l00373" name="l00373"></a><span class="lineno">  373</span>uint8_t i8086::CL()</div>
<div class="line"><a id="l00374" name="l00374"></a><span class="lineno">  374</span>{</div>
<div class="line"><a id="l00375" name="l00375"></a><span class="lineno">  375</span>  <span class="keywordflow">return</span> regs8[REG_CL];</div>
<div class="line"><a id="l00376" name="l00376"></a><span class="lineno">  376</span>}</div>
<div class="line"><a id="l00377" name="l00377"></a><span class="lineno">  377</span> </div>
<div class="line"><a id="l00378" name="l00378"></a><span class="lineno">  378</span> </div>
<div class="line"><a id="l00379" name="l00379"></a><span class="lineno">  379</span>uint8_t i8086::CH()</div>
<div class="line"><a id="l00380" name="l00380"></a><span class="lineno">  380</span>{</div>
<div class="line"><a id="l00381" name="l00381"></a><span class="lineno">  381</span>  <span class="keywordflow">return</span> regs8[REG_CH];</div>
<div class="line"><a id="l00382" name="l00382"></a><span class="lineno">  382</span>}</div>
<div class="line"><a id="l00383" name="l00383"></a><span class="lineno">  383</span> </div>
<div class="line"><a id="l00384" name="l00384"></a><span class="lineno">  384</span> </div>
<div class="line"><a id="l00385" name="l00385"></a><span class="lineno">  385</span><span class="keywordtype">void</span> i8086::setDL(uint8_t value)</div>
<div class="line"><a id="l00386" name="l00386"></a><span class="lineno">  386</span>{</div>
<div class="line"><a id="l00387" name="l00387"></a><span class="lineno">  387</span>  regs8[REG_DL] = value;</div>
<div class="line"><a id="l00388" name="l00388"></a><span class="lineno">  388</span>}</div>
<div class="line"><a id="l00389" name="l00389"></a><span class="lineno">  389</span> </div>
<div class="line"><a id="l00390" name="l00390"></a><span class="lineno">  390</span> </div>
<div class="line"><a id="l00391" name="l00391"></a><span class="lineno">  391</span><span class="keywordtype">void</span> i8086::setDH(uint8_t value)</div>
<div class="line"><a id="l00392" name="l00392"></a><span class="lineno">  392</span>{</div>
<div class="line"><a id="l00393" name="l00393"></a><span class="lineno">  393</span>  regs8[REG_DH] = value;</div>
<div class="line"><a id="l00394" name="l00394"></a><span class="lineno">  394</span>}</div>
<div class="line"><a id="l00395" name="l00395"></a><span class="lineno">  395</span> </div>
<div class="line"><a id="l00396" name="l00396"></a><span class="lineno">  396</span> </div>
<div class="line"><a id="l00397" name="l00397"></a><span class="lineno">  397</span>uint8_t i8086::DL()</div>
<div class="line"><a id="l00398" name="l00398"></a><span class="lineno">  398</span>{</div>
<div class="line"><a id="l00399" name="l00399"></a><span class="lineno">  399</span>  <span class="keywordflow">return</span> regs8[REG_DL];</div>
<div class="line"><a id="l00400" name="l00400"></a><span class="lineno">  400</span>}</div>
<div class="line"><a id="l00401" name="l00401"></a><span class="lineno">  401</span> </div>
<div class="line"><a id="l00402" name="l00402"></a><span class="lineno">  402</span> </div>
<div class="line"><a id="l00403" name="l00403"></a><span class="lineno">  403</span>uint8_t i8086::DH()</div>
<div class="line"><a id="l00404" name="l00404"></a><span class="lineno">  404</span>{</div>
<div class="line"><a id="l00405" name="l00405"></a><span class="lineno">  405</span>  <span class="keywordflow">return</span> regs8[REG_DH];</div>
<div class="line"><a id="l00406" name="l00406"></a><span class="lineno">  406</span>}</div>
<div class="line"><a id="l00407" name="l00407"></a><span class="lineno">  407</span> </div>
<div class="line"><a id="l00408" name="l00408"></a><span class="lineno">  408</span> </div>
<div class="line"><a id="l00409" name="l00409"></a><span class="lineno">  409</span><span class="keywordtype">void</span> i8086::setAX(uint16_t value)</div>
<div class="line"><a id="l00410" name="l00410"></a><span class="lineno">  410</span>{</div>
<div class="line"><a id="l00411" name="l00411"></a><span class="lineno">  411</span>  regs16[REG_AX] = value;</div>
<div class="line"><a id="l00412" name="l00412"></a><span class="lineno">  412</span>}</div>
<div class="line"><a id="l00413" name="l00413"></a><span class="lineno">  413</span> </div>
<div class="line"><a id="l00414" name="l00414"></a><span class="lineno">  414</span> </div>
<div class="line"><a id="l00415" name="l00415"></a><span class="lineno">  415</span><span class="keywordtype">void</span> i8086::setBX(uint16_t value)</div>
<div class="line"><a id="l00416" name="l00416"></a><span class="lineno">  416</span>{</div>
<div class="line"><a id="l00417" name="l00417"></a><span class="lineno">  417</span>  regs16[REG_BX] = value;</div>
<div class="line"><a id="l00418" name="l00418"></a><span class="lineno">  418</span>}</div>
<div class="line"><a id="l00419" name="l00419"></a><span class="lineno">  419</span> </div>
<div class="line"><a id="l00420" name="l00420"></a><span class="lineno">  420</span> </div>
<div class="line"><a id="l00421" name="l00421"></a><span class="lineno">  421</span><span class="keywordtype">void</span> i8086::setCX(uint16_t value)</div>
<div class="line"><a id="l00422" name="l00422"></a><span class="lineno">  422</span>{</div>
<div class="line"><a id="l00423" name="l00423"></a><span class="lineno">  423</span>  regs16[REG_CX] = value;</div>
<div class="line"><a id="l00424" name="l00424"></a><span class="lineno">  424</span>}</div>
<div class="line"><a id="l00425" name="l00425"></a><span class="lineno">  425</span> </div>
<div class="line"><a id="l00426" name="l00426"></a><span class="lineno">  426</span> </div>
<div class="line"><a id="l00427" name="l00427"></a><span class="lineno">  427</span><span class="keywordtype">void</span> i8086::setDX(uint16_t value)</div>
<div class="line"><a id="l00428" name="l00428"></a><span class="lineno">  428</span>{</div>
<div class="line"><a id="l00429" name="l00429"></a><span class="lineno">  429</span>  regs16[REG_DX] = value;</div>
<div class="line"><a id="l00430" name="l00430"></a><span class="lineno">  430</span>}</div>
<div class="line"><a id="l00431" name="l00431"></a><span class="lineno">  431</span> </div>
<div class="line"><a id="l00432" name="l00432"></a><span class="lineno">  432</span> </div>
<div class="line"><a id="l00433" name="l00433"></a><span class="lineno">  433</span><span class="keywordtype">void</span> i8086::setDI(uint16_t value)</div>
<div class="line"><a id="l00434" name="l00434"></a><span class="lineno">  434</span>{</div>
<div class="line"><a id="l00435" name="l00435"></a><span class="lineno">  435</span>  regs16[REG_DI] = value;</div>
<div class="line"><a id="l00436" name="l00436"></a><span class="lineno">  436</span>}</div>
<div class="line"><a id="l00437" name="l00437"></a><span class="lineno">  437</span> </div>
<div class="line"><a id="l00438" name="l00438"></a><span class="lineno">  438</span> </div>
<div class="line"><a id="l00439" name="l00439"></a><span class="lineno">  439</span><span class="keywordtype">void</span> i8086::setCS(uint16_t value)</div>
<div class="line"><a id="l00440" name="l00440"></a><span class="lineno">  440</span>{</div>
<div class="line"><a id="l00441" name="l00441"></a><span class="lineno">  441</span>  regs16[REG_CS] = value;</div>
<div class="line"><a id="l00442" name="l00442"></a><span class="lineno">  442</span>}</div>
<div class="line"><a id="l00443" name="l00443"></a><span class="lineno">  443</span> </div>
<div class="line"><a id="l00444" name="l00444"></a><span class="lineno">  444</span> </div>
<div class="line"><a id="l00445" name="l00445"></a><span class="lineno">  445</span><span class="keywordtype">void</span> i8086::setDS(uint16_t value)</div>
<div class="line"><a id="l00446" name="l00446"></a><span class="lineno">  446</span>{</div>
<div class="line"><a id="l00447" name="l00447"></a><span class="lineno">  447</span>  regs16[REG_DS] = value;</div>
<div class="line"><a id="l00448" name="l00448"></a><span class="lineno">  448</span>}</div>
<div class="line"><a id="l00449" name="l00449"></a><span class="lineno">  449</span> </div>
<div class="line"><a id="l00450" name="l00450"></a><span class="lineno">  450</span> </div>
<div class="line"><a id="l00451" name="l00451"></a><span class="lineno">  451</span><span class="keywordtype">void</span> i8086::setSS(uint16_t value)</div>
<div class="line"><a id="l00452" name="l00452"></a><span class="lineno">  452</span>{</div>
<div class="line"><a id="l00453" name="l00453"></a><span class="lineno">  453</span>  regs16[REG_SS] = value;</div>
<div class="line"><a id="l00454" name="l00454"></a><span class="lineno">  454</span>}</div>
<div class="line"><a id="l00455" name="l00455"></a><span class="lineno">  455</span> </div>
<div class="line"><a id="l00456" name="l00456"></a><span class="lineno">  456</span> </div>
<div class="line"><a id="l00457" name="l00457"></a><span class="lineno">  457</span><span class="keywordtype">void</span> i8086::setES(uint16_t value)</div>
<div class="line"><a id="l00458" name="l00458"></a><span class="lineno">  458</span>{</div>
<div class="line"><a id="l00459" name="l00459"></a><span class="lineno">  459</span>  regs16[REG_ES] = value;</div>
<div class="line"><a id="l00460" name="l00460"></a><span class="lineno">  460</span>}</div>
<div class="line"><a id="l00461" name="l00461"></a><span class="lineno">  461</span> </div>
<div class="line"><a id="l00462" name="l00462"></a><span class="lineno">  462</span> </div>
<div class="line"><a id="l00463" name="l00463"></a><span class="lineno">  463</span><span class="keywordtype">void</span> i8086::setIP(uint16_t value)</div>
<div class="line"><a id="l00464" name="l00464"></a><span class="lineno">  464</span>{</div>
<div class="line"><a id="l00465" name="l00465"></a><span class="lineno">  465</span>  reg_ip = value;</div>
<div class="line"><a id="l00466" name="l00466"></a><span class="lineno">  466</span>}</div>
<div class="line"><a id="l00467" name="l00467"></a><span class="lineno">  467</span> </div>
<div class="line"><a id="l00468" name="l00468"></a><span class="lineno">  468</span> </div>
<div class="line"><a id="l00469" name="l00469"></a><span class="lineno">  469</span>uint16_t i8086::IP()</div>
<div class="line"><a id="l00470" name="l00470"></a><span class="lineno">  470</span>{</div>
<div class="line"><a id="l00471" name="l00471"></a><span class="lineno">  471</span>  <span class="keywordflow">return</span> reg_ip;</div>
<div class="line"><a id="l00472" name="l00472"></a><span class="lineno">  472</span>}</div>
<div class="line"><a id="l00473" name="l00473"></a><span class="lineno">  473</span> </div>
<div class="line"><a id="l00474" name="l00474"></a><span class="lineno">  474</span> </div>
<div class="line"><a id="l00475" name="l00475"></a><span class="lineno">  475</span><span class="keywordtype">void</span> i8086::setSP(uint16_t value)</div>
<div class="line"><a id="l00476" name="l00476"></a><span class="lineno">  476</span>{</div>
<div class="line"><a id="l00477" name="l00477"></a><span class="lineno">  477</span>  regs16[REG_SP] = value;</div>
<div class="line"><a id="l00478" name="l00478"></a><span class="lineno">  478</span>}</div>
<div class="line"><a id="l00479" name="l00479"></a><span class="lineno">  479</span> </div>
<div class="line"><a id="l00480" name="l00480"></a><span class="lineno">  480</span> </div>
<div class="line"><a id="l00481" name="l00481"></a><span class="lineno">  481</span>uint16_t i8086::AX()</div>
<div class="line"><a id="l00482" name="l00482"></a><span class="lineno">  482</span>{</div>
<div class="line"><a id="l00483" name="l00483"></a><span class="lineno">  483</span>  <span class="keywordflow">return</span> regs16[REG_AX];</div>
<div class="line"><a id="l00484" name="l00484"></a><span class="lineno">  484</span>}</div>
<div class="line"><a id="l00485" name="l00485"></a><span class="lineno">  485</span> </div>
<div class="line"><a id="l00486" name="l00486"></a><span class="lineno">  486</span> </div>
<div class="line"><a id="l00487" name="l00487"></a><span class="lineno">  487</span>uint16_t i8086::BX()</div>
<div class="line"><a id="l00488" name="l00488"></a><span class="lineno">  488</span>{</div>
<div class="line"><a id="l00489" name="l00489"></a><span class="lineno">  489</span>  <span class="keywordflow">return</span> regs16[REG_BX];</div>
<div class="line"><a id="l00490" name="l00490"></a><span class="lineno">  490</span>}</div>
<div class="line"><a id="l00491" name="l00491"></a><span class="lineno">  491</span> </div>
<div class="line"><a id="l00492" name="l00492"></a><span class="lineno">  492</span> </div>
<div class="line"><a id="l00493" name="l00493"></a><span class="lineno">  493</span>uint16_t i8086::CX()</div>
<div class="line"><a id="l00494" name="l00494"></a><span class="lineno">  494</span>{</div>
<div class="line"><a id="l00495" name="l00495"></a><span class="lineno">  495</span>  <span class="keywordflow">return</span> regs16[REG_CX];</div>
<div class="line"><a id="l00496" name="l00496"></a><span class="lineno">  496</span>}</div>
<div class="line"><a id="l00497" name="l00497"></a><span class="lineno">  497</span> </div>
<div class="line"><a id="l00498" name="l00498"></a><span class="lineno">  498</span> </div>
<div class="line"><a id="l00499" name="l00499"></a><span class="lineno">  499</span>uint16_t i8086::DX()</div>
<div class="line"><a id="l00500" name="l00500"></a><span class="lineno">  500</span>{</div>
<div class="line"><a id="l00501" name="l00501"></a><span class="lineno">  501</span>  <span class="keywordflow">return</span> regs16[REG_DX];</div>
<div class="line"><a id="l00502" name="l00502"></a><span class="lineno">  502</span>}</div>
<div class="line"><a id="l00503" name="l00503"></a><span class="lineno">  503</span> </div>
<div class="line"><a id="l00504" name="l00504"></a><span class="lineno">  504</span> </div>
<div class="line"><a id="l00505" name="l00505"></a><span class="lineno">  505</span>uint16_t i8086::BP()</div>
<div class="line"><a id="l00506" name="l00506"></a><span class="lineno">  506</span>{</div>
<div class="line"><a id="l00507" name="l00507"></a><span class="lineno">  507</span>  <span class="keywordflow">return</span> regs16[REG_BP];</div>
<div class="line"><a id="l00508" name="l00508"></a><span class="lineno">  508</span>}</div>
<div class="line"><a id="l00509" name="l00509"></a><span class="lineno">  509</span> </div>
<div class="line"><a id="l00510" name="l00510"></a><span class="lineno">  510</span> </div>
<div class="line"><a id="l00511" name="l00511"></a><span class="lineno">  511</span>uint16_t i8086::SI()</div>
<div class="line"><a id="l00512" name="l00512"></a><span class="lineno">  512</span>{</div>
<div class="line"><a id="l00513" name="l00513"></a><span class="lineno">  513</span>  <span class="keywordflow">return</span> regs16[REG_SI];</div>
<div class="line"><a id="l00514" name="l00514"></a><span class="lineno">  514</span>}</div>
<div class="line"><a id="l00515" name="l00515"></a><span class="lineno">  515</span> </div>
<div class="line"><a id="l00516" name="l00516"></a><span class="lineno">  516</span> </div>
<div class="line"><a id="l00517" name="l00517"></a><span class="lineno">  517</span>uint16_t i8086::DI()</div>
<div class="line"><a id="l00518" name="l00518"></a><span class="lineno">  518</span>{</div>
<div class="line"><a id="l00519" name="l00519"></a><span class="lineno">  519</span>  <span class="keywordflow">return</span> regs16[REG_DI];</div>
<div class="line"><a id="l00520" name="l00520"></a><span class="lineno">  520</span>}</div>
<div class="line"><a id="l00521" name="l00521"></a><span class="lineno">  521</span> </div>
<div class="line"><a id="l00522" name="l00522"></a><span class="lineno">  522</span> </div>
<div class="line"><a id="l00523" name="l00523"></a><span class="lineno">  523</span>uint16_t i8086::SP()</div>
<div class="line"><a id="l00524" name="l00524"></a><span class="lineno">  524</span>{</div>
<div class="line"><a id="l00525" name="l00525"></a><span class="lineno">  525</span>  <span class="keywordflow">return</span> regs16[REG_SP];</div>
<div class="line"><a id="l00526" name="l00526"></a><span class="lineno">  526</span>}</div>
<div class="line"><a id="l00527" name="l00527"></a><span class="lineno">  527</span> </div>
<div class="line"><a id="l00528" name="l00528"></a><span class="lineno">  528</span> </div>
<div class="line"><a id="l00529" name="l00529"></a><span class="lineno">  529</span>uint16_t i8086::CS()</div>
<div class="line"><a id="l00530" name="l00530"></a><span class="lineno">  530</span>{</div>
<div class="line"><a id="l00531" name="l00531"></a><span class="lineno">  531</span>  <span class="keywordflow">return</span> regs16[REG_CS];</div>
<div class="line"><a id="l00532" name="l00532"></a><span class="lineno">  532</span>}</div>
<div class="line"><a id="l00533" name="l00533"></a><span class="lineno">  533</span> </div>
<div class="line"><a id="l00534" name="l00534"></a><span class="lineno">  534</span> </div>
<div class="line"><a id="l00535" name="l00535"></a><span class="lineno">  535</span>uint16_t i8086::ES()</div>
<div class="line"><a id="l00536" name="l00536"></a><span class="lineno">  536</span>{</div>
<div class="line"><a id="l00537" name="l00537"></a><span class="lineno">  537</span>  <span class="keywordflow">return</span> regs16[REG_ES];</div>
<div class="line"><a id="l00538" name="l00538"></a><span class="lineno">  538</span>}</div>
<div class="line"><a id="l00539" name="l00539"></a><span class="lineno">  539</span> </div>
<div class="line"><a id="l00540" name="l00540"></a><span class="lineno">  540</span> </div>
<div class="line"><a id="l00541" name="l00541"></a><span class="lineno">  541</span>uint16_t i8086::DS()</div>
<div class="line"><a id="l00542" name="l00542"></a><span class="lineno">  542</span>{</div>
<div class="line"><a id="l00543" name="l00543"></a><span class="lineno">  543</span>  <span class="keywordflow">return</span> regs16[REG_DS];</div>
<div class="line"><a id="l00544" name="l00544"></a><span class="lineno">  544</span>}</div>
<div class="line"><a id="l00545" name="l00545"></a><span class="lineno">  545</span> </div>
<div class="line"><a id="l00546" name="l00546"></a><span class="lineno">  546</span> </div>
<div class="line"><a id="l00547" name="l00547"></a><span class="lineno">  547</span>uint16_t i8086::SS()</div>
<div class="line"><a id="l00548" name="l00548"></a><span class="lineno">  548</span>{</div>
<div class="line"><a id="l00549" name="l00549"></a><span class="lineno">  549</span>  <span class="keywordflow">return</span> regs16[REG_SS];</div>
<div class="line"><a id="l00550" name="l00550"></a><span class="lineno">  550</span>}</div>
<div class="line"><a id="l00551" name="l00551"></a><span class="lineno">  551</span> </div>
<div class="line"><a id="l00552" name="l00552"></a><span class="lineno">  552</span> </div>
<div class="line"><a id="l00553" name="l00553"></a><span class="lineno">  553</span><span class="keywordtype">bool</span> i8086::flagIF()</div>
<div class="line"><a id="l00554" name="l00554"></a><span class="lineno">  554</span>{</div>
<div class="line"><a id="l00555" name="l00555"></a><span class="lineno">  555</span>  <span class="keywordflow">return</span> FLAG_IF;</div>
<div class="line"><a id="l00556" name="l00556"></a><span class="lineno">  556</span>}</div>
<div class="line"><a id="l00557" name="l00557"></a><span class="lineno">  557</span> </div>
<div class="line"><a id="l00558" name="l00558"></a><span class="lineno">  558</span> </div>
<div class="line"><a id="l00559" name="l00559"></a><span class="lineno">  559</span><span class="keywordtype">bool</span> i8086::flagTF()</div>
<div class="line"><a id="l00560" name="l00560"></a><span class="lineno">  560</span>{</div>
<div class="line"><a id="l00561" name="l00561"></a><span class="lineno">  561</span>  <span class="keywordflow">return</span> FLAG_TF;</div>
<div class="line"><a id="l00562" name="l00562"></a><span class="lineno">  562</span>}</div>
<div class="line"><a id="l00563" name="l00563"></a><span class="lineno">  563</span> </div>
<div class="line"><a id="l00564" name="l00564"></a><span class="lineno">  564</span> </div>
<div class="line"><a id="l00565" name="l00565"></a><span class="lineno">  565</span><span class="keywordtype">bool</span> i8086::flagCF()</div>
<div class="line"><a id="l00566" name="l00566"></a><span class="lineno">  566</span>{</div>
<div class="line"><a id="l00567" name="l00567"></a><span class="lineno">  567</span>  <span class="keywordflow">return</span> FLAG_CF;</div>
<div class="line"><a id="l00568" name="l00568"></a><span class="lineno">  568</span>}</div>
<div class="line"><a id="l00569" name="l00569"></a><span class="lineno">  569</span> </div>
<div class="line"><a id="l00570" name="l00570"></a><span class="lineno">  570</span> </div>
<div class="line"><a id="l00571" name="l00571"></a><span class="lineno">  571</span><span class="keywordtype">bool</span> i8086::flagZF()</div>
<div class="line"><a id="l00572" name="l00572"></a><span class="lineno">  572</span>{</div>
<div class="line"><a id="l00573" name="l00573"></a><span class="lineno">  573</span>  <span class="keywordflow">return</span> FLAG_ZF;</div>
<div class="line"><a id="l00574" name="l00574"></a><span class="lineno">  574</span>}</div>
<div class="line"><a id="l00575" name="l00575"></a><span class="lineno">  575</span> </div>
<div class="line"><a id="l00576" name="l00576"></a><span class="lineno">  576</span><span class="keywordtype">bool</span> i8086::flagOF()</div>
<div class="line"><a id="l00577" name="l00577"></a><span class="lineno">  577</span>{</div>
<div class="line"><a id="l00578" name="l00578"></a><span class="lineno">  578</span>  <span class="keywordflow">return</span> FLAG_OF;</div>
<div class="line"><a id="l00579" name="l00579"></a><span class="lineno">  579</span>}</div>
<div class="line"><a id="l00580" name="l00580"></a><span class="lineno">  580</span> </div>
<div class="line"><a id="l00581" name="l00581"></a><span class="lineno">  581</span><span class="keywordtype">bool</span> i8086::flagDF()</div>
<div class="line"><a id="l00582" name="l00582"></a><span class="lineno">  582</span>{</div>
<div class="line"><a id="l00583" name="l00583"></a><span class="lineno">  583</span>  <span class="keywordflow">return</span> FLAG_DF;</div>
<div class="line"><a id="l00584" name="l00584"></a><span class="lineno">  584</span>}</div>
<div class="line"><a id="l00585" name="l00585"></a><span class="lineno">  585</span> </div>
<div class="line"><a id="l00586" name="l00586"></a><span class="lineno">  586</span><span class="keywordtype">bool</span> i8086::flagSF()</div>
<div class="line"><a id="l00587" name="l00587"></a><span class="lineno">  587</span>{</div>
<div class="line"><a id="l00588" name="l00588"></a><span class="lineno">  588</span>  <span class="keywordflow">return</span> FLAG_SF;</div>
<div class="line"><a id="l00589" name="l00589"></a><span class="lineno">  589</span>}</div>
<div class="line"><a id="l00590" name="l00590"></a><span class="lineno">  590</span> </div>
<div class="line"><a id="l00591" name="l00591"></a><span class="lineno">  591</span><span class="keywordtype">bool</span> i8086::flagAF()</div>
<div class="line"><a id="l00592" name="l00592"></a><span class="lineno">  592</span>{</div>
<div class="line"><a id="l00593" name="l00593"></a><span class="lineno">  593</span>  <span class="keywordflow">return</span> FLAG_AF;</div>
<div class="line"><a id="l00594" name="l00594"></a><span class="lineno">  594</span>}</div>
<div class="line"><a id="l00595" name="l00595"></a><span class="lineno">  595</span> </div>
<div class="line"><a id="l00596" name="l00596"></a><span class="lineno">  596</span><span class="keywordtype">bool</span> i8086::flagPF()</div>
<div class="line"><a id="l00597" name="l00597"></a><span class="lineno">  597</span>{</div>
<div class="line"><a id="l00598" name="l00598"></a><span class="lineno">  598</span>  <span class="keywordflow">return</span> FLAG_PF;</div>
<div class="line"><a id="l00599" name="l00599"></a><span class="lineno">  599</span>}</div>
<div class="line"><a id="l00600" name="l00600"></a><span class="lineno">  600</span> </div>
<div class="line"><a id="l00601" name="l00601"></a><span class="lineno">  601</span><span class="keywordtype">void</span> i8086::setFlagZF(<span class="keywordtype">bool</span> value)</div>
<div class="line"><a id="l00602" name="l00602"></a><span class="lineno">  602</span>{</div>
<div class="line"><a id="l00603" name="l00603"></a><span class="lineno">  603</span>  FLAG_ZF = value;</div>
<div class="line"><a id="l00604" name="l00604"></a><span class="lineno">  604</span>}</div>
<div class="line"><a id="l00605" name="l00605"></a><span class="lineno">  605</span> </div>
<div class="line"><a id="l00606" name="l00606"></a><span class="lineno">  606</span> </div>
<div class="line"><a id="l00607" name="l00607"></a><span class="lineno">  607</span><span class="keywordtype">void</span> i8086::setFlagCF(<span class="keywordtype">bool</span> value)</div>
<div class="line"><a id="l00608" name="l00608"></a><span class="lineno">  608</span>{</div>
<div class="line"><a id="l00609" name="l00609"></a><span class="lineno">  609</span>  FLAG_CF = value;</div>
<div class="line"><a id="l00610" name="l00610"></a><span class="lineno">  610</span>}</div>
<div class="line"><a id="l00611" name="l00611"></a><span class="lineno">  611</span> </div>
<div class="line"><a id="l00612" name="l00612"></a><span class="lineno">  612</span> </div>
<div class="line"><a id="l00613" name="l00613"></a><span class="lineno">  613</span> </div>
<div class="line"><a id="l00614" name="l00614"></a><span class="lineno">  614</span> </div>
<div class="line"><a id="l00615" name="l00615"></a><span class="lineno">  615</span><span class="comment">// ret false if not acked</span></div>
<div class="line"><a id="l00616" name="l00616"></a><span class="lineno">  616</span><span class="keywordtype">bool</span> i8086::IRQ(uint8_t interrupt_num)</div>
<div class="line"><a id="l00617" name="l00617"></a><span class="lineno">  617</span>{</div>
<div class="line"><a id="l00618" name="l00618"></a><span class="lineno">  618</span>  <span class="keywordflow">if</span> (!s_pendingIRQ) {</div>
<div class="line"><a id="l00619" name="l00619"></a><span class="lineno">  619</span>    s_pendingIRQ = <span class="keyword">true</span>;</div>
<div class="line"><a id="l00620" name="l00620"></a><span class="lineno">  620</span>    s_pendingIRQIndex = interrupt_num;</div>
<div class="line"><a id="l00621" name="l00621"></a><span class="lineno">  621</span>    <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><a id="l00622" name="l00622"></a><span class="lineno">  622</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a id="l00623" name="l00623"></a><span class="lineno">  623</span>    <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a id="l00624" name="l00624"></a><span class="lineno">  624</span>  }</div>
<div class="line"><a id="l00625" name="l00625"></a><span class="lineno">  625</span>}</div>
<div class="line"><a id="l00626" name="l00626"></a><span class="lineno">  626</span> </div>
<div class="line"><a id="l00627" name="l00627"></a><span class="lineno">  627</span> </div>
<div class="line"><a id="l00628" name="l00628"></a><span class="lineno">  628</span> </div>
<div class="line"><a id="l00630" name="l00630"></a><span class="lineno">  630</span> </div>
<div class="line"><a id="l00631" name="l00631"></a><span class="lineno">  631</span> </div>
<div class="line"><a id="l00632" name="l00632"></a><span class="lineno">  632</span><span class="comment">// direct RAM access (not video RAM)</span></div>
<div class="line"><a id="l00633" name="l00633"></a><span class="lineno">  633</span><span class="preprocessor">#define MEM8(addr)  s_memory[addr]</span></div>
<div class="line"><a id="l00634" name="l00634"></a><span class="lineno">  634</span><span class="preprocessor">#define MEM16(addr) (*(uint16_t*)(s_memory + (addr)))</span></div>
<div class="line"><a id="l00635" name="l00635"></a><span class="lineno">  635</span> </div>
<div class="line"><a id="l00636" name="l00636"></a><span class="lineno">  636</span> </div>
<div class="line"><a id="l00637" name="l00637"></a><span class="lineno">  637</span>uint8_t i8086::RMEM8(<span class="keywordtype">int</span> addr)</div>
<div class="line"><a id="l00638" name="l00638"></a><span class="lineno">  638</span>{</div>
<div class="line"><a id="l00639" name="l00639"></a><span class="lineno">  639</span>  <span class="keywordflow">if</span> (addr &gt;= VIDEOMEM_START &amp;&amp; addr &lt; VIDEOMEM_END) {</div>
<div class="line"><a id="l00640" name="l00640"></a><span class="lineno">  640</span>    <span class="keywordflow">return</span> s_readVideoMemory8(s_context, addr);</div>
<div class="line"><a id="l00641" name="l00641"></a><span class="lineno">  641</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a id="l00642" name="l00642"></a><span class="lineno">  642</span>    <span class="keywordflow">return</span> s_memory[addr];</div>
<div class="line"><a id="l00643" name="l00643"></a><span class="lineno">  643</span>  }</div>
<div class="line"><a id="l00644" name="l00644"></a><span class="lineno">  644</span>}</div>
<div class="line"><a id="l00645" name="l00645"></a><span class="lineno">  645</span> </div>
<div class="line"><a id="l00646" name="l00646"></a><span class="lineno">  646</span> </div>
<div class="line"><a id="l00647" name="l00647"></a><span class="lineno">  647</span>uint16_t i8086::RMEM16(<span class="keywordtype">int</span> addr)</div>
<div class="line"><a id="l00648" name="l00648"></a><span class="lineno">  648</span>{</div>
<div class="line"><a id="l00649" name="l00649"></a><span class="lineno">  649</span>  <span class="keywordflow">if</span> (addr &gt;= VIDEOMEM_START &amp;&amp; addr &lt; VIDEOMEM_END) {</div>
<div class="line"><a id="l00650" name="l00650"></a><span class="lineno">  650</span>    <span class="keywordflow">return</span> s_readVideoMemory16(s_context, addr);</div>
<div class="line"><a id="l00651" name="l00651"></a><span class="lineno">  651</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a id="l00652" name="l00652"></a><span class="lineno">  652</span>    <span class="keywordflow">return</span> *(uint16_t*)(s_memory + addr);</div>
<div class="line"><a id="l00653" name="l00653"></a><span class="lineno">  653</span>  }</div>
<div class="line"><a id="l00654" name="l00654"></a><span class="lineno">  654</span>}</div>
<div class="line"><a id="l00655" name="l00655"></a><span class="lineno">  655</span> </div>
<div class="line"><a id="l00656" name="l00656"></a><span class="lineno">  656</span> </div>
<div class="line"><a id="l00657" name="l00657"></a><span class="lineno">  657</span><span class="keyword">inline</span> __attribute__((always_inline)) uint8_t i8086::WMEM8(<span class="keywordtype">int</span> addr, uint8_t value)</div>
<div class="line"><a id="l00658" name="l00658"></a><span class="lineno">  658</span>{</div>
<div class="line"><a id="l00659" name="l00659"></a><span class="lineno">  659</span>  <span class="keywordflow">if</span> (addr &gt;= VIDEOMEM_START &amp;&amp; addr &lt; VIDEOMEM_END) {</div>
<div class="line"><a id="l00660" name="l00660"></a><span class="lineno">  660</span>    s_writeVideoMemory8(s_context, addr, value);</div>
<div class="line"><a id="l00661" name="l00661"></a><span class="lineno">  661</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a id="l00662" name="l00662"></a><span class="lineno">  662</span>    s_memory[addr] = value;</div>
<div class="line"><a id="l00663" name="l00663"></a><span class="lineno">  663</span>  }</div>
<div class="line"><a id="l00664" name="l00664"></a><span class="lineno">  664</span>  <span class="keywordflow">return</span> value;</div>
<div class="line"><a id="l00665" name="l00665"></a><span class="lineno">  665</span>}</div>
<div class="line"><a id="l00666" name="l00666"></a><span class="lineno">  666</span> </div>
<div class="line"><a id="l00667" name="l00667"></a><span class="lineno">  667</span> </div>
<div class="line"><a id="l00668" name="l00668"></a><span class="lineno">  668</span><span class="keyword">inline</span> __attribute__((always_inline)) uint16_t i8086::WMEM16(<span class="keywordtype">int</span> addr, uint16_t value)</div>
<div class="line"><a id="l00669" name="l00669"></a><span class="lineno">  669</span>{</div>
<div class="line"><a id="l00670" name="l00670"></a><span class="lineno">  670</span>  <span class="keywordflow">if</span> (addr &gt;= VIDEOMEM_START &amp;&amp; addr &lt; VIDEOMEM_END) {</div>
<div class="line"><a id="l00671" name="l00671"></a><span class="lineno">  671</span>    s_writeVideoMemory16(s_context, addr, value);</div>
<div class="line"><a id="l00672" name="l00672"></a><span class="lineno">  672</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a id="l00673" name="l00673"></a><span class="lineno">  673</span>    *(uint16_t*)(s_memory + addr) = value;</div>
<div class="line"><a id="l00674" name="l00674"></a><span class="lineno">  674</span>  }</div>
<div class="line"><a id="l00675" name="l00675"></a><span class="lineno">  675</span>  <span class="keywordflow">return</span> value;</div>
<div class="line"><a id="l00676" name="l00676"></a><span class="lineno">  676</span>}</div>
<div class="line"><a id="l00677" name="l00677"></a><span class="lineno">  677</span> </div>
<div class="line"><a id="l00679" name="l00679"></a><span class="lineno">  679</span> </div>
<div class="line"><a id="l00680" name="l00680"></a><span class="lineno">  680</span> </div>
<div class="line"><a id="l00681" name="l00681"></a><span class="lineno">  681</span> </div>
<div class="line"><a id="l00682" name="l00682"></a><span class="lineno">  682</span><span class="comment">// Set auxiliary and overflow flag after arithmetic operations</span></div>
<div class="line"><a id="l00683" name="l00683"></a><span class="lineno">  683</span><span class="keywordtype">void</span> set_AF_OF_arith(int32_t op_result)</div>
<div class="line"><a id="l00684" name="l00684"></a><span class="lineno">  684</span>{</div>
<div class="line"><a id="l00685" name="l00685"></a><span class="lineno">  685</span>  FLAG_AF = (bool)((op_source ^= op_dest ^ op_result) &amp; 0x10);</div>
<div class="line"><a id="l00686" name="l00686"></a><span class="lineno">  686</span>  <span class="keywordflow">if</span> (op_result == op_dest)</div>
<div class="line"><a id="l00687" name="l00687"></a><span class="lineno">  687</span>    FLAG_OF = 0;</div>
<div class="line"><a id="l00688" name="l00688"></a><span class="lineno">  688</span>  <span class="keywordflow">else</span></div>
<div class="line"><a id="l00689" name="l00689"></a><span class="lineno">  689</span>    FLAG_OF = 1 &amp; (FLAG_CF ^ op_source &gt;&gt; (8 * (i_w + 1) - 1));</div>
<div class="line"><a id="l00690" name="l00690"></a><span class="lineno">  690</span>}</div>
<div class="line"><a id="l00691" name="l00691"></a><span class="lineno">  691</span> </div>
<div class="line"><a id="l00692" name="l00692"></a><span class="lineno">  692</span> </div>
<div class="line"><a id="l00693" name="l00693"></a><span class="lineno">  693</span><span class="comment">// Assemble and return emulated CPU FLAGS register</span></div>
<div class="line"><a id="l00694" name="l00694"></a><span class="lineno">  694</span>uint16_t i8086::make_flags()</div>
<div class="line"><a id="l00695" name="l00695"></a><span class="lineno">  695</span>{</div>
<div class="line"><a id="l00696" name="l00696"></a><span class="lineno">  696</span><span class="preprocessor">  #if I80186MODE</span></div>
<div class="line"><a id="l00697" name="l00697"></a><span class="lineno">  697</span>  uint16_t r = 0x0002;    <span class="comment">// to pass test186 tests, just unused bit nr. 1 is set to 1 (some programs checks this to know if this is a 80186 or 8086)</span></div>
<div class="line"><a id="l00698" name="l00698"></a><span class="lineno">  698</span><span class="preprocessor">  #else</span></div>
<div class="line"><a id="l00699" name="l00699"></a><span class="lineno">  699</span>  uint16_t r = 0xf002;    <span class="comment">// for real 8086</span></div>
<div class="line"><a id="l00700" name="l00700"></a><span class="lineno">  700</span><span class="preprocessor">  #endif</span></div>
<div class="line"><a id="l00701" name="l00701"></a><span class="lineno">  701</span> </div>
<div class="line"><a id="l00702" name="l00702"></a><span class="lineno">  702</span>  <span class="keywordflow">return</span> r | FLAG_CF &lt;&lt; 0 | FLAG_PF &lt;&lt; 2 | FLAG_AF &lt;&lt; 4 | FLAG_ZF &lt;&lt; 6 | FLAG_SF &lt;&lt; 7 | FLAG_TF &lt;&lt; 8 | FLAG_IF &lt;&lt; 9 | FLAG_DF &lt;&lt; 10 | FLAG_OF &lt;&lt; 11;</div>
<div class="line"><a id="l00703" name="l00703"></a><span class="lineno">  703</span>}</div>
<div class="line"><a id="l00704" name="l00704"></a><span class="lineno">  704</span> </div>
<div class="line"><a id="l00705" name="l00705"></a><span class="lineno">  705</span> </div>
<div class="line"><a id="l00706" name="l00706"></a><span class="lineno">  706</span><span class="keywordtype">void</span> i8086::set_flags(<span class="keywordtype">int</span> new_flags)</div>
<div class="line"><a id="l00707" name="l00707"></a><span class="lineno">  707</span>{</div>
<div class="line"><a id="l00708" name="l00708"></a><span class="lineno">  708</span>  FLAG_CF = (bool)(new_flags &amp; 0x001);</div>
<div class="line"><a id="l00709" name="l00709"></a><span class="lineno">  709</span>  FLAG_PF = (bool)(new_flags &amp; 0x004);</div>
<div class="line"><a id="l00710" name="l00710"></a><span class="lineno">  710</span>  FLAG_AF = (bool)(new_flags &amp; 0x010);</div>
<div class="line"><a id="l00711" name="l00711"></a><span class="lineno">  711</span>  FLAG_ZF = (bool)(new_flags &amp; 0x040);</div>
<div class="line"><a id="l00712" name="l00712"></a><span class="lineno">  712</span>  FLAG_SF = (bool)(new_flags &amp; 0x080);</div>
<div class="line"><a id="l00713" name="l00713"></a><span class="lineno">  713</span>  FLAG_TF = (bool)(new_flags &amp; 0x100);</div>
<div class="line"><a id="l00714" name="l00714"></a><span class="lineno">  714</span>  FLAG_IF = (bool)(new_flags &amp; 0x200);</div>
<div class="line"><a id="l00715" name="l00715"></a><span class="lineno">  715</span>  FLAG_DF = (bool)(new_flags &amp; 0x400);</div>
<div class="line"><a id="l00716" name="l00716"></a><span class="lineno">  716</span>  FLAG_OF = (bool)(new_flags &amp; 0x800);</div>
<div class="line"><a id="l00717" name="l00717"></a><span class="lineno">  717</span>}</div>
<div class="line"><a id="l00718" name="l00718"></a><span class="lineno">  718</span> </div>
<div class="line"><a id="l00719" name="l00719"></a><span class="lineno">  719</span> </div>
<div class="line"><a id="l00720" name="l00720"></a><span class="lineno">  720</span><span class="comment">// Convert raw opcode to translated opcode index. This condenses a large number of different encodings of similar</span></div>
<div class="line"><a id="l00721" name="l00721"></a><span class="lineno">  721</span><span class="comment">// instructions into a much smaller number of distinct functions, which we then execute</span></div>
<div class="line"><a id="l00722" name="l00722"></a><span class="lineno">  722</span><span class="keywordtype">void</span> set_opcode(uint8_t opcode)</div>
<div class="line"><a id="l00723" name="l00723"></a><span class="lineno">  723</span>{</div>
<div class="line"><a id="l00724" name="l00724"></a><span class="lineno">  724</span>  raw_opcode_id  = opcode;</div>
<div class="line"><a id="l00725" name="l00725"></a><span class="lineno">  725</span>  xlat_opcode_id = xlat_ids[opcode];</div>
<div class="line"><a id="l00726" name="l00726"></a><span class="lineno">  726</span>  extra          = ex_data[opcode];</div>
<div class="line"><a id="l00727" name="l00727"></a><span class="lineno">  727</span>  i_mod_size     = i_mod_adder[opcode];</div>
<div class="line"><a id="l00728" name="l00728"></a><span class="lineno">  728</span>  set_flags_type = std_flags[opcode];</div>
<div class="line"><a id="l00729" name="l00729"></a><span class="lineno">  729</span>}</div>
<div class="line"><a id="l00730" name="l00730"></a><span class="lineno">  730</span> </div>
<div class="line"><a id="l00731" name="l00731"></a><span class="lineno">  731</span> </div>
<div class="line"><a id="l00732" name="l00732"></a><span class="lineno">  732</span><span class="comment">// Execute INT #interrupt_num on the emulated machine</span></div>
<div class="line"><a id="l00733" name="l00733"></a><span class="lineno">  733</span><span class="keywordtype">void</span> i8086::pc_interrupt(uint8_t interrupt_num)</div>
<div class="line"><a id="l00734" name="l00734"></a><span class="lineno">  734</span>{</div>
<div class="line"><a id="l00735" name="l00735"></a><span class="lineno">  735</span>  <span class="comment">// fab: interrupt can exit from halt state</span></div>
<div class="line"><a id="l00736" name="l00736"></a><span class="lineno">  736</span>  <span class="keywordflow">if</span> (s_halted) {</div>
<div class="line"><a id="l00737" name="l00737"></a><span class="lineno">  737</span>    s_halted = <span class="keyword">false</span>;</div>
<div class="line"><a id="l00738" name="l00738"></a><span class="lineno">  738</span>    ++reg_ip; <span class="comment">// go to next instruction after HLT</span></div>
<div class="line"><a id="l00739" name="l00739"></a><span class="lineno">  739</span>  }</div>
<div class="line"><a id="l00740" name="l00740"></a><span class="lineno">  740</span> </div>
<div class="line"><a id="l00741" name="l00741"></a><span class="lineno">  741</span>  <span class="keywordflow">if</span> (!s_interrupt(s_context, interrupt_num)) {</div>
<div class="line"><a id="l00742" name="l00742"></a><span class="lineno">  742</span>    uint16_t newIP     = MEM16(4 * interrupt_num);</div>
<div class="line"><a id="l00743" name="l00743"></a><span class="lineno">  743</span>    uint16_t newCS     = MEM16(4 * interrupt_num + 2);</div>
<div class="line"><a id="l00744" name="l00744"></a><span class="lineno">  744</span> </div>
<div class="line"><a id="l00745" name="l00745"></a><span class="lineno">  745</span>    regs16[REG_SP] -= 6;</div>
<div class="line"><a id="l00746" name="l00746"></a><span class="lineno">  746</span>    uint16_t * stack = &amp;MEM16(16 * regs16[REG_SS] + regs16[REG_SP]);</div>
<div class="line"><a id="l00747" name="l00747"></a><span class="lineno">  747</span>    stack[2] = make_flags();</div>
<div class="line"><a id="l00748" name="l00748"></a><span class="lineno">  748</span>    stack[1] = regs16[REG_CS];</div>
<div class="line"><a id="l00749" name="l00749"></a><span class="lineno">  749</span>    stack[0] = reg_ip;</div>
<div class="line"><a id="l00750" name="l00750"></a><span class="lineno">  750</span> </div>
<div class="line"><a id="l00751" name="l00751"></a><span class="lineno">  751</span>    reg_ip         = newIP;</div>
<div class="line"><a id="l00752" name="l00752"></a><span class="lineno">  752</span>    regs16[REG_CS] = newCS;</div>
<div class="line"><a id="l00753" name="l00753"></a><span class="lineno">  753</span> </div>
<div class="line"><a id="l00754" name="l00754"></a><span class="lineno">  754</span>    FLAG_TF = FLAG_IF = 0;</div>
<div class="line"><a id="l00755" name="l00755"></a><span class="lineno">  755</span>  }</div>
<div class="line"><a id="l00756" name="l00756"></a><span class="lineno">  756</span>}</div>
<div class="line"><a id="l00757" name="l00757"></a><span class="lineno">  757</span> </div>
<div class="line"><a id="l00758" name="l00758"></a><span class="lineno">  758</span> </div>
<div class="line"><a id="l00759" name="l00759"></a><span class="lineno">  759</span><span class="comment">// fab: necessary to go back to the first instruction prefix</span></div>
<div class="line"><a id="l00760" name="l00760"></a><span class="lineno">  760</span>uint8_t i8086::raiseDivideByZeroInterrupt()</div>
<div class="line"><a id="l00761" name="l00761"></a><span class="lineno">  761</span>{</div>
<div class="line"><a id="l00762" name="l00762"></a><span class="lineno">  762</span>  <span class="keywordflow">if</span> (seg_override_en || rep_override_en) {</div>
<div class="line"><a id="l00763" name="l00763"></a><span class="lineno">  763</span>    <span class="comment">// go back looking for segment prefixes or REP prefixes</span></div>
<div class="line"><a id="l00764" name="l00764"></a><span class="lineno">  764</span>    <span class="keywordflow">while</span> (<span class="keyword">true</span>) {</div>
<div class="line"><a id="l00765" name="l00765"></a><span class="lineno">  765</span>      uint8_t opcode = MEM8(16 * regs16[REG_CS] + reg_ip - 1);</div>
<div class="line"><a id="l00766" name="l00766"></a><span class="lineno">  766</span>      <span class="comment">// break if not REP and SEG</span></div>
<div class="line"><a id="l00767" name="l00767"></a><span class="lineno">  767</span>      <span class="keywordflow">if</span> ((opcode &amp; 0xfe) != 0xf2 &amp;&amp; (opcode &amp; 0xe7) != 0x26)</div>
<div class="line"><a id="l00768" name="l00768"></a><span class="lineno">  768</span>        <span class="keywordflow">break</span>;</div>
<div class="line"><a id="l00769" name="l00769"></a><span class="lineno">  769</span>      --reg_ip;</div>
<div class="line"><a id="l00770" name="l00770"></a><span class="lineno">  770</span>    }</div>
<div class="line"><a id="l00771" name="l00771"></a><span class="lineno">  771</span>  }</div>
<div class="line"><a id="l00772" name="l00772"></a><span class="lineno">  772</span>  pc_interrupt(0);</div>
<div class="line"><a id="l00773" name="l00773"></a><span class="lineno">  773</span>  <span class="keywordflow">return</span> 0;</div>
<div class="line"><a id="l00774" name="l00774"></a><span class="lineno">  774</span>}</div>
<div class="line"><a id="l00775" name="l00775"></a><span class="lineno">  775</span> </div>
<div class="line"><a id="l00776" name="l00776"></a><span class="lineno">  776</span> </div>
<div class="line"><a id="l00777" name="l00777"></a><span class="lineno">  777</span><span class="comment">// AAA and AAS instructions - which_operation is +1 for AAA, and -1 for AAS</span></div>
<div class="line"><a id="l00778" name="l00778"></a><span class="lineno">  778</span><span class="keyword">static</span> int32_t AAA_AAS()</div>
<div class="line"><a id="l00779" name="l00779"></a><span class="lineno">  779</span>{</div>
<div class="line"><a id="l00780" name="l00780"></a><span class="lineno">  780</span>  FLAG_AF = FLAG_CF = ((regs8[REG_AL] &amp; 0x0F) &gt; 9) || FLAG_AF;</div>
<div class="line"><a id="l00781" name="l00781"></a><span class="lineno">  781</span>  regs16[REG_AX] += 262 * (extra - 1) * FLAG_AF;</div>
<div class="line"><a id="l00782" name="l00782"></a><span class="lineno">  782</span>  <span class="keywordflow">return</span> regs8[REG_AL] &amp;= 0x0F;</div>
<div class="line"><a id="l00783" name="l00783"></a><span class="lineno">  783</span>}</div>
<div class="line"><a id="l00784" name="l00784"></a><span class="lineno">  784</span> </div>
<div class="line"><a id="l00785" name="l00785"></a><span class="lineno">  785</span> </div>
<div class="line"><a id="l00786" name="l00786"></a><span class="lineno">  786</span><span class="keyword">static</span> int32_t DAA_DAS()</div>
<div class="line"><a id="l00787" name="l00787"></a><span class="lineno">  787</span>{</div>
<div class="line"><a id="l00788" name="l00788"></a><span class="lineno">  788</span>  <span class="comment">// fab: fixed to pass test186</span></div>
<div class="line"><a id="l00789" name="l00789"></a><span class="lineno">  789</span>  i_w = 0;</div>
<div class="line"><a id="l00790" name="l00790"></a><span class="lineno">  790</span>  FLAG_AF = (regs8[REG_AL] &amp; 0x0f) &gt; 9 || FLAG_AF;</div>
<div class="line"><a id="l00791" name="l00791"></a><span class="lineno">  791</span>  FLAG_CF = regs8[REG_AL] &gt; 0x99 || FLAG_CF;</div>
<div class="line"><a id="l00792" name="l00792"></a><span class="lineno">  792</span>  <span class="keywordflow">if</span> (extra) {</div>
<div class="line"><a id="l00793" name="l00793"></a><span class="lineno">  793</span>    <span class="comment">// DAS</span></div>
<div class="line"><a id="l00794" name="l00794"></a><span class="lineno">  794</span>    <span class="keywordflow">if</span> (FLAG_CF)</div>
<div class="line"><a id="l00795" name="l00795"></a><span class="lineno">  795</span>      regs8[REG_AL] -= 0x60;</div>
<div class="line"><a id="l00796" name="l00796"></a><span class="lineno">  796</span>    <span class="keywordflow">else</span> <span class="keywordflow">if</span> (FLAG_AF)</div>
<div class="line"><a id="l00797" name="l00797"></a><span class="lineno">  797</span>      FLAG_CF = (regs8[REG_AL] &lt; 6);</div>
<div class="line"><a id="l00798" name="l00798"></a><span class="lineno">  798</span>    <span class="keywordflow">if</span> (FLAG_AF)</div>
<div class="line"><a id="l00799" name="l00799"></a><span class="lineno">  799</span>      regs8[REG_AL] -= 6;</div>
<div class="line"><a id="l00800" name="l00800"></a><span class="lineno">  800</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a id="l00801" name="l00801"></a><span class="lineno">  801</span>    <span class="comment">// DAA</span></div>
<div class="line"><a id="l00802" name="l00802"></a><span class="lineno">  802</span>    <span class="keywordflow">if</span> (FLAG_CF)</div>
<div class="line"><a id="l00803" name="l00803"></a><span class="lineno">  803</span>      regs8[REG_AL] += 0x60;</div>
<div class="line"><a id="l00804" name="l00804"></a><span class="lineno">  804</span>    <span class="keywordflow">if</span> (FLAG_AF)</div>
<div class="line"><a id="l00805" name="l00805"></a><span class="lineno">  805</span>      regs8[REG_AL] += 6;</div>
<div class="line"><a id="l00806" name="l00806"></a><span class="lineno">  806</span>  }</div>
<div class="line"><a id="l00807" name="l00807"></a><span class="lineno">  807</span>  <span class="keywordflow">return</span> regs8[REG_AL];</div>
<div class="line"><a id="l00808" name="l00808"></a><span class="lineno">  808</span>}</div>
<div class="line"><a id="l00809" name="l00809"></a><span class="lineno">  809</span> </div>
<div class="line"><a id="l00810" name="l00810"></a><span class="lineno">  810</span> </div>
<div class="line"><a id="l00811" name="l00811"></a><span class="lineno">  811</span><span class="keywordtype">void</span> i8086::reset()</div>
<div class="line"><a id="l00812" name="l00812"></a><span class="lineno">  812</span>{</div>
<div class="line"><a id="l00813" name="l00813"></a><span class="lineno">  813</span>  regs_offset = (int32_t)(regs - s_memory);</div>
<div class="line"><a id="l00814" name="l00814"></a><span class="lineno">  814</span> </div>
<div class="line"><a id="l00815" name="l00815"></a><span class="lineno">  815</span>  regs8  = (uint8_t *)(s_memory + regs_offset);</div>
<div class="line"><a id="l00816" name="l00816"></a><span class="lineno">  816</span>  regs16 = (uint16_t *)(s_memory + regs_offset);</div>
<div class="line"><a id="l00817" name="l00817"></a><span class="lineno">  817</span> </div>
<div class="line"><a id="l00818" name="l00818"></a><span class="lineno">  818</span>  memset(regs8, 0, <span class="keyword">sizeof</span>(regs));</div>
<div class="line"><a id="l00819" name="l00819"></a><span class="lineno">  819</span>  set_flags(0);</div>
<div class="line"><a id="l00820" name="l00820"></a><span class="lineno">  820</span> </div>
<div class="line"><a id="l00821" name="l00821"></a><span class="lineno">  821</span>  <span class="comment">// Initialise CPU state variables</span></div>
<div class="line"><a id="l00822" name="l00822"></a><span class="lineno">  822</span>  seg_override_en = 0;</div>
<div class="line"><a id="l00823" name="l00823"></a><span class="lineno">  823</span>  rep_override_en = 0;</div>
<div class="line"><a id="l00824" name="l00824"></a><span class="lineno">  824</span> </div>
<div class="line"><a id="l00825" name="l00825"></a><span class="lineno">  825</span>  s_halted = <span class="keyword">false</span>;</div>
<div class="line"><a id="l00826" name="l00826"></a><span class="lineno">  826</span> </div>
<div class="line"><a id="l00827" name="l00827"></a><span class="lineno">  827</span>  regs16[REG_CS] = 0xffff;</div>
<div class="line"><a id="l00828" name="l00828"></a><span class="lineno">  828</span>  reg_ip = 0;</div>
<div class="line"><a id="l00829" name="l00829"></a><span class="lineno">  829</span>}</div>
<div class="line"><a id="l00830" name="l00830"></a><span class="lineno">  830</span> </div>
<div class="line"><a id="l00831" name="l00831"></a><span class="lineno">  831</span> </div>
<div class="line"><a id="l00832" name="l00832"></a><span class="lineno">  832</span><span class="comment">// tries to make more compact opcode &quot;switch&quot;</span></div>
<div class="line"><a id="l00833" name="l00833"></a><span class="lineno">  833</span><span class="keyword">static</span> uint8_t optcodes[] = {</div>
<div class="line"><a id="l00834" name="l00834"></a><span class="lineno">  834</span><span class="comment">// 0    1   2   3   4   5   6   7   8   9   a   b   c   d   e   f</span></div>
<div class="line"><a id="l00835" name="l00835"></a><span class="lineno">  835</span>   0,   0,  0,  0,  0,  0, 13, 12,  0,  0,  0,  0,  0,  0, 13,  0, <span class="comment">// 00 - 0f</span></div>
<div class="line"><a id="l00836" name="l00836"></a><span class="lineno">  836</span>   0,   0,  0,  0,  0,  0, 13, 12,  0,  0,  0,  0,  0,  0, 13, 12, <span class="comment">// 10 - 1f</span></div>
<div class="line"><a id="l00837" name="l00837"></a><span class="lineno">  837</span>   0,   0,  0,  0,  0,  0,  1,  0,  0,  0,  0,  0,  0,  0,  1,  0, <span class="comment">// 20 - 2f</span></div>
<div class="line"><a id="l00838" name="l00838"></a><span class="lineno">  838</span>   0,   0,  0,  0,  0,  0,  1,  0,  0,  0,  0,  0,  0,  0,  1,  0, <span class="comment">// 30 - 3f</span></div>
<div class="line"><a id="l00839" name="l00839"></a><span class="lineno">  839</span>   0,   0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0, <span class="comment">// 40 - 4f</span></div>
<div class="line"><a id="l00840" name="l00840"></a><span class="lineno">  840</span>   9,   9,  9,  9,  9,  9,  9,  9,  8,  8,  8,  8,  8,  8,  8,  8, <span class="comment">// 50 - 5f</span></div>
<div class="line"><a id="l00841" name="l00841"></a><span class="lineno">  841</span>   0,   0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0, <span class="comment">// 60 - 6f</span></div>
<div class="line"><a id="l00842" name="l00842"></a><span class="lineno">  842</span>   2,   2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2, <span class="comment">// 70 - 7f</span></div>
<div class="line"><a id="l00843" name="l00843"></a><span class="lineno">  843</span>   0,   0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0, 18,  0, <span class="comment">// 80 - 8f</span></div>
<div class="line"><a id="l00844" name="l00844"></a><span class="lineno">  844</span>   0,   0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0, <span class="comment">// 90 - 9f</span></div>
<div class="line"><a id="l00845" name="l00845"></a><span class="lineno">  845</span>   0,   0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0, <span class="comment">// a0 - af</span></div>
<div class="line"><a id="l00846" name="l00846"></a><span class="lineno">  846</span>   10, 10, 10, 10, 10, 10, 10, 10, 11, 11, 11, 11, 11, 11, 11, 11, <span class="comment">// b0 - bf</span></div>
<div class="line"><a id="l00847" name="l00847"></a><span class="lineno">  847</span>   0,   0,  0,  7,  0,  0,  0,  0,  0,  0,  0, 17,  0, 15,  0, 16, <span class="comment">// c0 - cf</span></div>
<div class="line"><a id="l00848" name="l00848"></a><span class="lineno">  848</span>   0,   0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0, <span class="comment">// d0 - df</span></div>
<div class="line"><a id="l00849" name="l00849"></a><span class="lineno">  849</span>   0,   0,  0,  5,  0,  0,  0,  0,  6,  0,  0,  3,  0,  0,  0,  0, <span class="comment">// e0 - ef</span></div>
<div class="line"><a id="l00850" name="l00850"></a><span class="lineno">  850</span>   0,   0, 14, 14,  0,  0,  0,  0,  4,  4,  4,  4,  4,  4,  0,  0, <span class="comment">// f0 - ff</span></div>
<div class="line"><a id="l00851" name="l00851"></a><span class="lineno">  851</span>};</div>
<div class="line"><a id="l00852" name="l00852"></a><span class="lineno">  852</span> </div>
<div class="line"><a id="l00853" name="l00853"></a><span class="lineno">  853</span> </div>
<div class="line"><a id="l00854" name="l00854"></a><span class="lineno">  854</span><span class="keywordtype">void</span> i8086::step()</div>
<div class="line"><a id="l00855" name="l00855"></a><span class="lineno">  855</span>{</div>
<div class="line"><a id="l00856" name="l00856"></a><span class="lineno">  856</span> </div>
<div class="line"><a id="l00857" name="l00857"></a><span class="lineno">  857</span>  <span class="comment">// Interrupts handling</span></div>
<div class="line"><a id="l00858" name="l00858"></a><span class="lineno">  858</span>  <span class="comment">// Following instructions inhibits interrupts for the next instruction:</span></div>
<div class="line"><a id="l00859" name="l00859"></a><span class="lineno">  859</span>  <span class="comment">//    MOV SS, xxx     [opcode 0x8e]</span></div>
<div class="line"><a id="l00860" name="l00860"></a><span class="lineno">  860</span>  <span class="comment">//    POP SS          [opcode 0x17]</span></div>
<div class="line"><a id="l00861" name="l00861"></a><span class="lineno">  861</span>  <span class="comment">//    STI             [opcode 0xfb]</span></div>
<div class="line"><a id="l00862" name="l00862"></a><span class="lineno">  862</span>  <span class="comment">// They are hard coded inside below loop, repeating it using &quot;break&quot; instead of &quot;return&quot;</span></div>
<div class="line"><a id="l00863" name="l00863"></a><span class="lineno">  863</span> </div>
<div class="line"><a id="l00864" name="l00864"></a><span class="lineno">  864</span>  <span class="comment">// Application has set trap flag, so fire INT 1</span></div>
<div class="line"><a id="l00865" name="l00865"></a><span class="lineno">  865</span>  <span class="keywordflow">if</span> (FLAG_TF &amp;&amp; !seg_override_en &amp;&amp; !rep_override_en) {</div>
<div class="line"><a id="l00866" name="l00866"></a><span class="lineno">  866</span>    pc_interrupt(1);</div>
<div class="line"><a id="l00867" name="l00867"></a><span class="lineno">  867</span>  }</div>
<div class="line"><a id="l00868" name="l00868"></a><span class="lineno">  868</span>  <span class="comment">// Check for interrupts triggered by system interfaces</span></div>
<div class="line"><a id="l00869" name="l00869"></a><span class="lineno">  869</span>  <span class="keywordflow">else</span> <span class="keywordflow">if</span> (FLAG_IF &amp;&amp; s_pendingIRQ &amp;&amp; !seg_override_en &amp;&amp; !rep_override_en) {</div>
<div class="line"><a id="l00870" name="l00870"></a><span class="lineno">  870</span>    pc_interrupt(s_pendingIRQIndex);</div>
<div class="line"><a id="l00871" name="l00871"></a><span class="lineno">  871</span>    s_pendingIRQ = <span class="keyword">false</span>;</div>
<div class="line"><a id="l00872" name="l00872"></a><span class="lineno">  872</span>  }</div>
<div class="line"><a id="l00873" name="l00873"></a><span class="lineno">  873</span> </div>
<div class="line"><a id="l00874" name="l00874"></a><span class="lineno">  874</span>  <span class="comment">// Instructions handling</span></div>
<div class="line"><a id="l00875" name="l00875"></a><span class="lineno">  875</span> </div>
<div class="line"><a id="l00876" name="l00876"></a><span class="lineno">  876</span>  PSRAM_WORKAROUND2</div>
<div class="line"><a id="l00877" name="l00877"></a><span class="lineno">  877</span>  </div>
<div class="line"><a id="l00878" name="l00878"></a><span class="lineno">  878</span>  <span class="comment">// external interrupts allowed only out of this loop</span></div>
<div class="line"><a id="l00879" name="l00879"></a><span class="lineno">  879</span>  <span class="keywordflow">while</span> (<span class="keyword">true</span>) {</div>
<div class="line"><a id="l00880" name="l00880"></a><span class="lineno">  880</span> </div>
<div class="line"><a id="l00881" name="l00881"></a><span class="lineno">  881</span>    <span class="comment">// seg_override_en and rep_override_en contain number of instructions to hold segment override and REP prefix respectively</span></div>
<div class="line"><a id="l00882" name="l00882"></a><span class="lineno">  882</span>    <span class="keywordflow">if</span> (seg_override_en)</div>
<div class="line"><a id="l00883" name="l00883"></a><span class="lineno">  883</span>      --seg_override_en;</div>
<div class="line"><a id="l00884" name="l00884"></a><span class="lineno">  884</span>    <span class="keywordflow">if</span> (rep_override_en)</div>
<div class="line"><a id="l00885" name="l00885"></a><span class="lineno">  885</span>      --rep_override_en;</div>
<div class="line"><a id="l00886" name="l00886"></a><span class="lineno">  886</span> </div>
<div class="line"><a id="l00887" name="l00887"></a><span class="lineno">  887</span>    uint8_t <span class="keyword">const</span> * opcode_stream = s_memory + 16 * regs16[REG_CS] + reg_ip;</div>
<div class="line"><a id="l00888" name="l00888"></a><span class="lineno">  888</span> </div>
<div class="line"><a id="l00889" name="l00889"></a><span class="lineno">  889</span><span class="preprocessor">    #if I8086_SHOW_OPCODE_STATS</span></div>
<div class="line"><a id="l00890" name="l00890"></a><span class="lineno">  890</span>    <span class="keyword">static</span> uint32_t opcodeStats[256] = {0};</div>
<div class="line"><a id="l00891" name="l00891"></a><span class="lineno">  891</span>    <span class="keyword">static</span> <span class="keywordtype">int</span>      opcodeStatsCount = 0;</div>
<div class="line"><a id="l00892" name="l00892"></a><span class="lineno">  892</span>    <span class="keyword">static</span> uint64_t opcodeStatsT0 = esp_timer_get_time();</div>
<div class="line"><a id="l00893" name="l00893"></a><span class="lineno">  893</span>    opcodeStats[*opcode_stream] += 1;</div>
<div class="line"><a id="l00894" name="l00894"></a><span class="lineno">  894</span>    ++opcodeStatsCount;</div>
<div class="line"><a id="l00895" name="l00895"></a><span class="lineno">  895</span>    <span class="keywordflow">if</span> ((opcodeStatsCount % 500000000) == 0) {</div>
<div class="line"><a id="l00896" name="l00896"></a><span class="lineno">  896</span>      opcodeStatsCount = 0;</div>
<div class="line"><a id="l00897" name="l00897"></a><span class="lineno">  897</span>      <span class="keywordflow">if</span> (Serial.available()) {</div>
<div class="line"><a id="l00898" name="l00898"></a><span class="lineno">  898</span>        Serial.read();</div>
<div class="line"><a id="l00899" name="l00899"></a><span class="lineno">  899</span>        printf(<span class="stringliteral">&quot;\ntime delta = %llu uS\n\n&quot;</span>, esp_timer_get_time() - opcodeStatsT0);</div>
<div class="line"><a id="l00900" name="l00900"></a><span class="lineno">  900</span>        opcodeStatsT0 = esp_timer_get_time();</div>
<div class="line"><a id="l00901" name="l00901"></a><span class="lineno">  901</span>        <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; 256; ++i) {</div>
<div class="line"><a id="l00902" name="l00902"></a><span class="lineno">  902</span>          <span class="keywordflow">if</span> (opcodeStats[i] &gt; 0)</div>
<div class="line"><a id="l00903" name="l00903"></a><span class="lineno">  903</span>            printf(<span class="stringliteral">&quot;%d, %02X\n&quot;</span>, opcodeStats[i], i);</div>
<div class="line"><a id="l00904" name="l00904"></a><span class="lineno">  904</span>          opcodeStats[i] = 0;</div>
<div class="line"><a id="l00905" name="l00905"></a><span class="lineno">  905</span>        }</div>
<div class="line"><a id="l00906" name="l00906"></a><span class="lineno">  906</span>        printf(<span class="stringliteral">&quot;\n&quot;</span>);</div>
<div class="line"><a id="l00907" name="l00907"></a><span class="lineno">  907</span>      }</div>
<div class="line"><a id="l00908" name="l00908"></a><span class="lineno">  908</span>    }</div>
<div class="line"><a id="l00909" name="l00909"></a><span class="lineno">  909</span><span class="preprocessor">    #endif</span></div>
<div class="line"><a id="l00910" name="l00910"></a><span class="lineno">  910</span> </div>
<div class="line"><a id="l00911" name="l00911"></a><span class="lineno">  911</span>    <span class="comment">// quick and dirty processing of simple and common instructions</span></div>
<div class="line"><a id="l00912" name="l00912"></a><span class="lineno">  912</span>    <span class="keywordflow">switch</span> (optcodes[*opcode_stream]) {</div>
<div class="line"><a id="l00913" name="l00913"></a><span class="lineno">  913</span> </div>
<div class="line"><a id="l00914" name="l00914"></a><span class="lineno">  914</span>      <span class="comment">// SEG ES</span></div>
<div class="line"><a id="l00915" name="l00915"></a><span class="lineno">  915</span>      <span class="comment">// SEG CS</span></div>
<div class="line"><a id="l00916" name="l00916"></a><span class="lineno">  916</span>      <span class="comment">// SEG SS</span></div>
<div class="line"><a id="l00917" name="l00917"></a><span class="lineno">  917</span>      <span class="comment">// SEG DS</span></div>
<div class="line"><a id="l00918" name="l00918"></a><span class="lineno">  918</span>      <span class="comment">// opcodes 0x26, 0x2e, 0x36, 0x3e</span></div>
<div class="line"><a id="l00919" name="l00919"></a><span class="lineno">  919</span>      <span class="keywordflow">case</span> 1:</div>
<div class="line"><a id="l00920" name="l00920"></a><span class="lineno">  920</span>        seg_override_en = 2;</div>
<div class="line"><a id="l00921" name="l00921"></a><span class="lineno">  921</span>        seg_override    = ex_data[*opcode_stream];</div>
<div class="line"><a id="l00922" name="l00922"></a><span class="lineno">  922</span>        <span class="keywordflow">if</span> (rep_override_en)</div>
<div class="line"><a id="l00923" name="l00923"></a><span class="lineno">  923</span>          ++rep_override_en;</div>
<div class="line"><a id="l00924" name="l00924"></a><span class="lineno">  924</span>        ++reg_ip;</div>
<div class="line"><a id="l00925" name="l00925"></a><span class="lineno">  925</span>        <span class="keywordflow">return</span>;</div>
<div class="line"><a id="l00926" name="l00926"></a><span class="lineno">  926</span> </div>
<div class="line"><a id="l00927" name="l00927"></a><span class="lineno">  927</span>      <span class="comment">// JO</span></div>
<div class="line"><a id="l00928" name="l00928"></a><span class="lineno">  928</span>      <span class="comment">// JNO</span></div>
<div class="line"><a id="l00929" name="l00929"></a><span class="lineno">  929</span>      <span class="comment">// JB/JNAE/JC</span></div>
<div class="line"><a id="l00930" name="l00930"></a><span class="lineno">  930</span>      <span class="comment">// JAE/JNB/JNC</span></div>
<div class="line"><a id="l00931" name="l00931"></a><span class="lineno">  931</span>      <span class="comment">// JE/JZ</span></div>
<div class="line"><a id="l00932" name="l00932"></a><span class="lineno">  932</span>      <span class="comment">// JNE/JNZ</span></div>
<div class="line"><a id="l00933" name="l00933"></a><span class="lineno">  933</span>      <span class="comment">// JBE/JNA</span></div>
<div class="line"><a id="l00934" name="l00934"></a><span class="lineno">  934</span>      <span class="comment">// JA/JNBE</span></div>
<div class="line"><a id="l00935" name="l00935"></a><span class="lineno">  935</span>      <span class="comment">// JS</span></div>
<div class="line"><a id="l00936" name="l00936"></a><span class="lineno">  936</span>      <span class="comment">// JNS</span></div>
<div class="line"><a id="l00937" name="l00937"></a><span class="lineno">  937</span>      <span class="comment">// JP/JPE</span></div>
<div class="line"><a id="l00938" name="l00938"></a><span class="lineno">  938</span>      <span class="comment">// JNP/JPO</span></div>
<div class="line"><a id="l00939" name="l00939"></a><span class="lineno">  939</span>      <span class="comment">// JL/JNGE</span></div>
<div class="line"><a id="l00940" name="l00940"></a><span class="lineno">  940</span>      <span class="comment">// JGE/JNL</span></div>
<div class="line"><a id="l00941" name="l00941"></a><span class="lineno">  941</span>      <span class="comment">// JLE/JNG</span></div>
<div class="line"><a id="l00942" name="l00942"></a><span class="lineno">  942</span>      <span class="comment">// JG/JNLE</span></div>
<div class="line"><a id="l00943" name="l00943"></a><span class="lineno">  943</span>      <span class="comment">// opcodes 0x70 ... 0x7f</span></div>
<div class="line"><a id="l00944" name="l00944"></a><span class="lineno">  944</span>      <span class="keywordflow">case</span> 2:</div>
<div class="line"><a id="l00945" name="l00945"></a><span class="lineno">  945</span>      {</div>
<div class="line"><a id="l00946" name="l00946"></a><span class="lineno">  946</span>        int32_t inv = *opcode_stream &amp; 1; <span class="comment">// inv is the invert flag, e.g. 1 means JNAE, whereas 0 means JAE</span></div>
<div class="line"><a id="l00947" name="l00947"></a><span class="lineno">  947</span>        int32_t idx = (*opcode_stream &gt;&gt; 1) &amp; 7;</div>
<div class="line"><a id="l00948" name="l00948"></a><span class="lineno">  948</span>        reg_ip += 2 + (int8_t)opcode_stream[1] * (inv ^ (flags[jxx_dec_a[idx]] || flags[jxx_dec_b[idx]] || flags[jxx_dec_c[idx]] ^ flags[jxx_dec_d[idx]]));</div>
<div class="line"><a id="l00949" name="l00949"></a><span class="lineno">  949</span>        <span class="keywordflow">return</span>;</div>
<div class="line"><a id="l00950" name="l00950"></a><span class="lineno">  950</span>      }</div>
<div class="line"><a id="l00951" name="l00951"></a><span class="lineno">  951</span> </div>
<div class="line"><a id="l00952" name="l00952"></a><span class="lineno">  952</span>      <span class="comment">// JMP disp8</span></div>
<div class="line"><a id="l00953" name="l00953"></a><span class="lineno">  953</span>      <span class="comment">// opcode 0xeb</span></div>
<div class="line"><a id="l00954" name="l00954"></a><span class="lineno">  954</span>      <span class="keywordflow">case</span> 3:</div>
<div class="line"><a id="l00955" name="l00955"></a><span class="lineno">  955</span>        reg_ip += 2 + (int8_t)opcode_stream[1];</div>
<div class="line"><a id="l00956" name="l00956"></a><span class="lineno">  956</span>        <span class="keywordflow">return</span>;</div>
<div class="line"><a id="l00957" name="l00957"></a><span class="lineno">  957</span> </div>
<div class="line"><a id="l00958" name="l00958"></a><span class="lineno">  958</span>      <span class="comment">// CLC|STC|CLI|STI|CLD|STD</span></div>
<div class="line"><a id="l00959" name="l00959"></a><span class="lineno">  959</span>      <span class="comment">// opcodes 0xf8 ... 0xfd</span></div>
<div class="line"><a id="l00960" name="l00960"></a><span class="lineno">  960</span>      <span class="keywordflow">case</span> 4:</div>
<div class="line"><a id="l00961" name="l00961"></a><span class="lineno">  961</span>      {</div>
<div class="line"><a id="l00962" name="l00962"></a><span class="lineno">  962</span>        <span class="keyword">static</span> int16_t FADDR[3] = { CF_ADDR, IF_ADDR, DF_ADDR };</div>
<div class="line"><a id="l00963" name="l00963"></a><span class="lineno">  963</span>        flags[FADDR[(*opcode_stream &gt;&gt; 1) &amp; 3]] = *opcode_stream &amp; 1;</div>
<div class="line"><a id="l00964" name="l00964"></a><span class="lineno">  964</span>        ++reg_ip;</div>
<div class="line"><a id="l00965" name="l00965"></a><span class="lineno">  965</span>        <span class="keywordflow">break</span>;  <span class="comment">// reloop, this is required to inhibit interrupt until next instruction (actually should be just for STI...)</span></div>
<div class="line"><a id="l00966" name="l00966"></a><span class="lineno">  966</span>      }</div>
<div class="line"><a id="l00967" name="l00967"></a><span class="lineno">  967</span> </div>
<div class="line"><a id="l00968" name="l00968"></a><span class="lineno">  968</span>      <span class="comment">// JCXZ</span></div>
<div class="line"><a id="l00969" name="l00969"></a><span class="lineno">  969</span>      <span class="comment">// opcode 0xe3</span></div>
<div class="line"><a id="l00970" name="l00970"></a><span class="lineno">  970</span>      <span class="keywordflow">case</span> 5:</div>
<div class="line"><a id="l00971" name="l00971"></a><span class="lineno">  971</span>        reg_ip += 2 + !regs16[REG_CX] * (int8_t)opcode_stream[1];</div>
<div class="line"><a id="l00972" name="l00972"></a><span class="lineno">  972</span>        <span class="keywordflow">return</span>;</div>
<div class="line"><a id="l00973" name="l00973"></a><span class="lineno">  973</span> </div>
<div class="line"><a id="l00974" name="l00974"></a><span class="lineno">  974</span>      <span class="comment">// CALL disp16</span></div>
<div class="line"><a id="l00975" name="l00975"></a><span class="lineno">  975</span>      <span class="comment">// opcode 0xe8</span></div>
<div class="line"><a id="l00976" name="l00976"></a><span class="lineno">  976</span>      <span class="keywordflow">case</span> 6:</div>
<div class="line"><a id="l00977" name="l00977"></a><span class="lineno">  977</span>      {</div>
<div class="line"><a id="l00978" name="l00978"></a><span class="lineno">  978</span>        uint16_t pIP = reg_ip + 3;</div>
<div class="line"><a id="l00979" name="l00979"></a><span class="lineno">  979</span>        reg_ip = pIP + *(uint16_t*)(opcode_stream + 1);</div>
<div class="line"><a id="l00980" name="l00980"></a><span class="lineno">  980</span>        regs16[REG_SP] -= 2;</div>
<div class="line"><a id="l00981" name="l00981"></a><span class="lineno">  981</span>        MEM16(16 * regs16[REG_SS] + regs16[REG_SP]) = pIP;</div>
<div class="line"><a id="l00982" name="l00982"></a><span class="lineno">  982</span>        <span class="keywordflow">return</span>;</div>
<div class="line"><a id="l00983" name="l00983"></a><span class="lineno">  983</span>      }</div>
<div class="line"><a id="l00984" name="l00984"></a><span class="lineno">  984</span> </div>
<div class="line"><a id="l00985" name="l00985"></a><span class="lineno">  985</span>      <span class="comment">// RET (intrasegment)</span></div>
<div class="line"><a id="l00986" name="l00986"></a><span class="lineno">  986</span>      <span class="comment">// opcode 0xc3</span></div>
<div class="line"><a id="l00987" name="l00987"></a><span class="lineno">  987</span>      <span class="keywordflow">case</span> 7:</div>
<div class="line"><a id="l00988" name="l00988"></a><span class="lineno">  988</span>        reg_ip = MEM16(16 * regs16[REG_SS] + regs16[REG_SP]);</div>
<div class="line"><a id="l00989" name="l00989"></a><span class="lineno">  989</span>        regs16[REG_SP] += 2;</div>
<div class="line"><a id="l00990" name="l00990"></a><span class="lineno">  990</span>        <span class="keywordflow">return</span>;</div>
<div class="line"><a id="l00991" name="l00991"></a><span class="lineno">  991</span> </div>
<div class="line"><a id="l00992" name="l00992"></a><span class="lineno">  992</span>      <span class="comment">// POP reg</span></div>
<div class="line"><a id="l00993" name="l00993"></a><span class="lineno">  993</span>      <span class="comment">// opcodes 0x58 ... 0x5f</span></div>
<div class="line"><a id="l00994" name="l00994"></a><span class="lineno">  994</span>      <span class="keywordflow">case</span> 8:</div>
<div class="line"><a id="l00995" name="l00995"></a><span class="lineno">  995</span>        regs16[REG_SP] += 2;  <span class="comment">// SP may be read from stack, so we have to increment here</span></div>
<div class="line"><a id="l00996" name="l00996"></a><span class="lineno">  996</span>        regs16[*opcode_stream &amp; 7] = MEM16(16 * regs16[REG_SS] + (uint16_t)(regs16[REG_SP] - 2));</div>
<div class="line"><a id="l00997" name="l00997"></a><span class="lineno">  997</span>        ++reg_ip;</div>
<div class="line"><a id="l00998" name="l00998"></a><span class="lineno">  998</span>        <span class="keywordflow">return</span>;</div>
<div class="line"><a id="l00999" name="l00999"></a><span class="lineno">  999</span> </div>
<div class="line"><a id="l01000" name="l01000"></a><span class="lineno"> 1000</span>      <span class="comment">// PUSH reg</span></div>
<div class="line"><a id="l01001" name="l01001"></a><span class="lineno"> 1001</span>      <span class="comment">// opcodes 0x50 ... 0x57</span></div>
<div class="line"><a id="l01002" name="l01002"></a><span class="lineno"> 1002</span>      <span class="keywordflow">case</span> 9:</div>
<div class="line"><a id="l01003" name="l01003"></a><span class="lineno"> 1003</span>        regs16[REG_SP] -= 2;</div>
<div class="line"><a id="l01004" name="l01004"></a><span class="lineno"> 1004</span>        MEM16(16 * regs16[REG_SS] + regs16[REG_SP]) = regs16[*opcode_stream &amp; 7];</div>
<div class="line"><a id="l01005" name="l01005"></a><span class="lineno"> 1005</span>        ++reg_ip;</div>
<div class="line"><a id="l01006" name="l01006"></a><span class="lineno"> 1006</span>        <span class="keywordflow">return</span>;</div>
<div class="line"><a id="l01007" name="l01007"></a><span class="lineno"> 1007</span> </div>
<div class="line"><a id="l01008" name="l01008"></a><span class="lineno"> 1008</span>      <span class="comment">// MOV reg8, data8</span></div>
<div class="line"><a id="l01009" name="l01009"></a><span class="lineno"> 1009</span>      <span class="comment">// opcodes 0xb0 ... 0xb7</span></div>
<div class="line"><a id="l01010" name="l01010"></a><span class="lineno"> 1010</span>      <span class="keywordflow">case</span> 10:</div>
<div class="line"><a id="l01011" name="l01011"></a><span class="lineno"> 1011</span>        regs8[((*opcode_stream &gt;&gt; 2) &amp; 1) + (*opcode_stream &amp; 3) * 2] = *(opcode_stream + 1);</div>
<div class="line"><a id="l01012" name="l01012"></a><span class="lineno"> 1012</span>        reg_ip += 2;</div>
<div class="line"><a id="l01013" name="l01013"></a><span class="lineno"> 1013</span>        <span class="keywordflow">return</span>;</div>
<div class="line"><a id="l01014" name="l01014"></a><span class="lineno"> 1014</span> </div>
<div class="line"><a id="l01015" name="l01015"></a><span class="lineno"> 1015</span>      <span class="comment">// MOV reg16, data16</span></div>
<div class="line"><a id="l01016" name="l01016"></a><span class="lineno"> 1016</span>      <span class="comment">// opcodes 0xb8 ... 0xbf</span></div>
<div class="line"><a id="l01017" name="l01017"></a><span class="lineno"> 1017</span>      <span class="keywordflow">case</span> 11:</div>
<div class="line"><a id="l01018" name="l01018"></a><span class="lineno"> 1018</span>        regs16[*opcode_stream &amp; 0x7] = *(uint16_t*)(opcode_stream + 1);</div>
<div class="line"><a id="l01019" name="l01019"></a><span class="lineno"> 1019</span>        reg_ip += 3;</div>
<div class="line"><a id="l01020" name="l01020"></a><span class="lineno"> 1020</span>        <span class="keywordflow">return</span>;</div>
<div class="line"><a id="l01021" name="l01021"></a><span class="lineno"> 1021</span> </div>
<div class="line"><a id="l01022" name="l01022"></a><span class="lineno"> 1022</span>      <span class="comment">// POP ES</span></div>
<div class="line"><a id="l01023" name="l01023"></a><span class="lineno"> 1023</span>      <span class="comment">// POP SS</span></div>
<div class="line"><a id="l01024" name="l01024"></a><span class="lineno"> 1024</span>      <span class="comment">// POP DS</span></div>
<div class="line"><a id="l01025" name="l01025"></a><span class="lineno"> 1025</span>      <span class="comment">// opcodes 0x07 0x17 0x1f</span></div>
<div class="line"><a id="l01026" name="l01026"></a><span class="lineno"> 1026</span>      <span class="keywordflow">case</span> 12:</div>
<div class="line"><a id="l01027" name="l01027"></a><span class="lineno"> 1027</span>        regs16[REG_ES + (*opcode_stream &gt;&gt; 3)] = MEM16(16 * regs16[REG_SS] + regs16[REG_SP]);</div>
<div class="line"><a id="l01028" name="l01028"></a><span class="lineno"> 1028</span>        regs16[REG_SP] += 2;</div>
<div class="line"><a id="l01029" name="l01029"></a><span class="lineno"> 1029</span>        ++reg_ip;</div>
<div class="line"><a id="l01030" name="l01030"></a><span class="lineno"> 1030</span>        <span class="keywordflow">break</span>; <span class="comment">// reloop, this is required to inhibit interrupt until next instruction (actually just for POP SS)</span></div>
<div class="line"><a id="l01031" name="l01031"></a><span class="lineno"> 1031</span> </div>
<div class="line"><a id="l01032" name="l01032"></a><span class="lineno"> 1032</span>      <span class="comment">// PUSH ES</span></div>
<div class="line"><a id="l01033" name="l01033"></a><span class="lineno"> 1033</span>      <span class="comment">// PUSH CS (80186)</span></div>
<div class="line"><a id="l01034" name="l01034"></a><span class="lineno"> 1034</span>      <span class="comment">// PUSH SS</span></div>
<div class="line"><a id="l01035" name="l01035"></a><span class="lineno"> 1035</span>      <span class="comment">// PUSH DS</span></div>
<div class="line"><a id="l01036" name="l01036"></a><span class="lineno"> 1036</span>      <span class="comment">// opcodes 0x06 0x0e 0x16 0x1e</span></div>
<div class="line"><a id="l01037" name="l01037"></a><span class="lineno"> 1037</span>      <span class="keywordflow">case</span> 13:</div>
<div class="line"><a id="l01038" name="l01038"></a><span class="lineno"> 1038</span>        regs16[REG_SP] -= 2;</div>
<div class="line"><a id="l01039" name="l01039"></a><span class="lineno"> 1039</span>        MEM16(16 * regs16[REG_SS] + regs16[REG_SP]) = regs16[REG_ES + (*opcode_stream &gt;&gt; 3)];</div>
<div class="line"><a id="l01040" name="l01040"></a><span class="lineno"> 1040</span>        ++reg_ip;</div>
<div class="line"><a id="l01041" name="l01041"></a><span class="lineno"> 1041</span>        <span class="keywordflow">return</span>;</div>
<div class="line"><a id="l01042" name="l01042"></a><span class="lineno"> 1042</span> </div>
<div class="line"><a id="l01043" name="l01043"></a><span class="lineno"> 1043</span>      <span class="comment">// REP / REPE / REPNE / REPNZ / REPZ</span></div>
<div class="line"><a id="l01044" name="l01044"></a><span class="lineno"> 1044</span>      <span class="comment">// opcodes 0xf2 0xf3</span></div>
<div class="line"><a id="l01045" name="l01045"></a><span class="lineno"> 1045</span>      <span class="keywordflow">case</span> 14:</div>
<div class="line"><a id="l01046" name="l01046"></a><span class="lineno"> 1046</span>        rep_override_en = 2;</div>
<div class="line"><a id="l01047" name="l01047"></a><span class="lineno"> 1047</span>        rep_mode = *opcode_stream &amp; 1;</div>
<div class="line"><a id="l01048" name="l01048"></a><span class="lineno"> 1048</span>        <span class="keywordflow">if</span> (seg_override_en)</div>
<div class="line"><a id="l01049" name="l01049"></a><span class="lineno"> 1049</span>          ++seg_override_en;</div>
<div class="line"><a id="l01050" name="l01050"></a><span class="lineno"> 1050</span>        ++reg_ip;</div>
<div class="line"><a id="l01051" name="l01051"></a><span class="lineno"> 1051</span>        <span class="keywordflow">return</span>;</div>
<div class="line"><a id="l01052" name="l01052"></a><span class="lineno"> 1052</span> </div>
<div class="line"><a id="l01053" name="l01053"></a><span class="lineno"> 1053</span>      <span class="comment">// INT imm8</span></div>
<div class="line"><a id="l01054" name="l01054"></a><span class="lineno"> 1054</span>      <span class="comment">// opcode 0xcd</span></div>
<div class="line"><a id="l01055" name="l01055"></a><span class="lineno"> 1055</span>      <span class="keywordflow">case</span> 15:</div>
<div class="line"><a id="l01056" name="l01056"></a><span class="lineno"> 1056</span>        reg_ip += 2;</div>
<div class="line"><a id="l01057" name="l01057"></a><span class="lineno"> 1057</span>        pc_interrupt(opcode_stream[1]);</div>
<div class="line"><a id="l01058" name="l01058"></a><span class="lineno"> 1058</span>        <span class="keywordflow">return</span>;</div>
<div class="line"><a id="l01059" name="l01059"></a><span class="lineno"> 1059</span> </div>
<div class="line"><a id="l01060" name="l01060"></a><span class="lineno"> 1060</span>      <span class="comment">// IRET</span></div>
<div class="line"><a id="l01061" name="l01061"></a><span class="lineno"> 1061</span>      <span class="comment">// opcode 0xcf</span></div>
<div class="line"><a id="l01062" name="l01062"></a><span class="lineno"> 1062</span>      <span class="keywordflow">case</span> 16:</div>
<div class="line"><a id="l01063" name="l01063"></a><span class="lineno"> 1063</span>      {</div>
<div class="line"><a id="l01064" name="l01064"></a><span class="lineno"> 1064</span>        uint16_t * stack = &amp;MEM16(16 * regs16[REG_SS] + regs16[REG_SP]);</div>
<div class="line"><a id="l01065" name="l01065"></a><span class="lineno"> 1065</span>        reg_ip         = stack[0];</div>
<div class="line"><a id="l01066" name="l01066"></a><span class="lineno"> 1066</span>        regs16[REG_CS] = stack[1];</div>
<div class="line"><a id="l01067" name="l01067"></a><span class="lineno"> 1067</span>        set_flags(stack[2]);</div>
<div class="line"><a id="l01068" name="l01068"></a><span class="lineno"> 1068</span>        regs16[REG_SP] += 6;</div>
<div class="line"><a id="l01069" name="l01069"></a><span class="lineno"> 1069</span>        <span class="keywordflow">return</span>;</div>
<div class="line"><a id="l01070" name="l01070"></a><span class="lineno"> 1070</span>      }</div>
<div class="line"><a id="l01071" name="l01071"></a><span class="lineno"> 1071</span> </div>
<div class="line"><a id="l01072" name="l01072"></a><span class="lineno"> 1072</span>      <span class="comment">// RETF (intersegment RET)</span></div>
<div class="line"><a id="l01073" name="l01073"></a><span class="lineno"> 1073</span>      <span class="comment">// opcode 0xcb</span></div>
<div class="line"><a id="l01074" name="l01074"></a><span class="lineno"> 1074</span>      <span class="keywordflow">case</span> 17:</div>
<div class="line"><a id="l01075" name="l01075"></a><span class="lineno"> 1075</span>      {</div>
<div class="line"><a id="l01076" name="l01076"></a><span class="lineno"> 1076</span>        uint16_t * stack = &amp;MEM16(16 * regs16[REG_SS] + regs16[REG_SP]);</div>
<div class="line"><a id="l01077" name="l01077"></a><span class="lineno"> 1077</span>        reg_ip         = stack[0];</div>
<div class="line"><a id="l01078" name="l01078"></a><span class="lineno"> 1078</span>        regs16[REG_CS] = stack[1];</div>
<div class="line"><a id="l01079" name="l01079"></a><span class="lineno"> 1079</span>        regs16[REG_SP] += 4;</div>
<div class="line"><a id="l01080" name="l01080"></a><span class="lineno"> 1080</span>        <span class="keywordflow">return</span>;</div>
<div class="line"><a id="l01081" name="l01081"></a><span class="lineno"> 1081</span>      }</div>
<div class="line"><a id="l01082" name="l01082"></a><span class="lineno"> 1082</span> </div>
<div class="line"><a id="l01083" name="l01083"></a><span class="lineno"> 1083</span>      <span class="comment">// MOV SS, r/m</span></div>
<div class="line"><a id="l01084" name="l01084"></a><span class="lineno"> 1084</span>      <span class="keywordflow">case</span> 18:</div>
<div class="line"><a id="l01085" name="l01085"></a><span class="lineno"> 1085</span>        stepEx(opcode_stream);</div>
<div class="line"><a id="l01086" name="l01086"></a><span class="lineno"> 1086</span>        <span class="keywordflow">break</span>;  <span class="comment">// reloop, this is required to inhibit interrupt until next instruction</span></div>
<div class="line"><a id="l01087" name="l01087"></a><span class="lineno"> 1087</span> </div>
<div class="line"><a id="l01088" name="l01088"></a><span class="lineno"> 1088</span>      <span class="keywordflow">default</span>:</div>
<div class="line"><a id="l01089" name="l01089"></a><span class="lineno"> 1089</span>        stepEx(opcode_stream);</div>
<div class="line"><a id="l01090" name="l01090"></a><span class="lineno"> 1090</span>        <span class="keywordflow">return</span>;</div>
<div class="line"><a id="l01091" name="l01091"></a><span class="lineno"> 1091</span> </div>
<div class="line"><a id="l01092" name="l01092"></a><span class="lineno"> 1092</span>    }</div>
<div class="line"><a id="l01093" name="l01093"></a><span class="lineno"> 1093</span>    </div>
<div class="line"><a id="l01094" name="l01094"></a><span class="lineno"> 1094</span>  };</div>
<div class="line"><a id="l01095" name="l01095"></a><span class="lineno"> 1095</span> </div>
<div class="line"><a id="l01096" name="l01096"></a><span class="lineno"> 1096</span>}</div>
<div class="line"><a id="l01097" name="l01097"></a><span class="lineno"> 1097</span> </div>
<div class="line"><a id="l01098" name="l01098"></a><span class="lineno"> 1098</span> </div>
<div class="line"><a id="l01099" name="l01099"></a><span class="lineno"> 1099</span><span class="keywordtype">void</span> i8086::stepEx(uint8_t <span class="keyword">const</span> * opcode_stream)</div>
<div class="line"><a id="l01100" name="l01100"></a><span class="lineno"> 1100</span>{</div>
<div class="line"><a id="l01101" name="l01101"></a><span class="lineno"> 1101</span>  set_opcode(*opcode_stream);</div>
<div class="line"><a id="l01102" name="l01102"></a><span class="lineno"> 1102</span> </div>
<div class="line"><a id="l01103" name="l01103"></a><span class="lineno"> 1103</span>  <span class="comment">// Extract fields from instruction</span></div>
<div class="line"><a id="l01104" name="l01104"></a><span class="lineno"> 1104</span>  uint8_t i_reg4bit = raw_opcode_id &amp; 7;</div>
<div class="line"><a id="l01105" name="l01105"></a><span class="lineno"> 1105</span>  i_w = i_reg4bit &amp; 1;</div>
<div class="line"><a id="l01106" name="l01106"></a><span class="lineno"> 1106</span>  i_d = i_reg4bit / 2 &amp; 1;</div>
<div class="line"><a id="l01107" name="l01107"></a><span class="lineno"> 1107</span> </div>
<div class="line"><a id="l01108" name="l01108"></a><span class="lineno"> 1108</span>  <span class="comment">// Extract instruction data fields</span></div>
<div class="line"><a id="l01109" name="l01109"></a><span class="lineno"> 1109</span>  uint16_t i_data0 = opcode_stream[1] | (opcode_stream[2] &lt;&lt; 8);</div>
<div class="line"><a id="l01110" name="l01110"></a><span class="lineno"> 1110</span>  uint16_t i_data1 = (i_data0 &gt;&gt; 8) | (opcode_stream[3] &lt;&lt; 8);</div>
<div class="line"><a id="l01111" name="l01111"></a><span class="lineno"> 1111</span>  uint16_t i_data2 = (i_data1 &gt;&gt; 8) | (opcode_stream[4] &lt;&lt; 8);</div>
<div class="line"><a id="l01112" name="l01112"></a><span class="lineno"> 1112</span> </div>
<div class="line"><a id="l01113" name="l01113"></a><span class="lineno"> 1113</span>  uint8_t i_mod = 0, i_rm = 0, i_reg = 0;</div>
<div class="line"><a id="l01114" name="l01114"></a><span class="lineno"> 1114</span>  int32_t op_result = 0;</div>
<div class="line"><a id="l01115" name="l01115"></a><span class="lineno"> 1115</span>  int32_t rm_addr = 0;</div>
<div class="line"><a id="l01116" name="l01116"></a><span class="lineno"> 1116</span> </div>
<div class="line"><a id="l01117" name="l01117"></a><span class="lineno"> 1117</span>  <span class="keywordtype">bool</span> calcIP = <span class="keyword">true</span>;</div>
<div class="line"><a id="l01118" name="l01118"></a><span class="lineno"> 1118</span> </div>
<div class="line"><a id="l01119" name="l01119"></a><span class="lineno"> 1119</span>  <span class="comment">// i_mod_size &gt; 0 indicates that opcode uses i_mod/i_rm/i_reg, so decode them</span></div>
<div class="line"><a id="l01120" name="l01120"></a><span class="lineno"> 1120</span>  <span class="keywordflow">if</span> (i_mod_size) {</div>
<div class="line"><a id="l01121" name="l01121"></a><span class="lineno"> 1121</span>    i_mod = (i_data0 &amp; 0xFF) &gt;&gt; 6;</div>
<div class="line"><a id="l01122" name="l01122"></a><span class="lineno"> 1122</span>    i_rm  = i_data0 &amp; 7;</div>
<div class="line"><a id="l01123" name="l01123"></a><span class="lineno"> 1123</span>    i_reg = i_data0 / 8 &amp; 7;</div>
<div class="line"><a id="l01124" name="l01124"></a><span class="lineno"> 1124</span> </div>
<div class="line"><a id="l01125" name="l01125"></a><span class="lineno"> 1125</span>    <span class="keywordflow">if</span> ((!i_mod &amp;&amp; i_rm == 6) || (i_mod == 2))</div>
<div class="line"><a id="l01126" name="l01126"></a><span class="lineno"> 1126</span>      i_data2 = (i_data2 &gt;&gt; 8) | (opcode_stream[5] &lt;&lt; 8);</div>
<div class="line"><a id="l01127" name="l01127"></a><span class="lineno"> 1127</span>    <span class="keywordflow">else</span> <span class="keywordflow">if</span> (i_mod != 1)</div>
<div class="line"><a id="l01128" name="l01128"></a><span class="lineno"> 1128</span>      i_data2 = i_data1;</div>
<div class="line"><a id="l01129" name="l01129"></a><span class="lineno"> 1129</span>    <span class="keywordflow">else</span> <span class="comment">// If i_mod is 1, operand is (usually) 8 bits rather than 16 bits</span></div>
<div class="line"><a id="l01130" name="l01130"></a><span class="lineno"> 1130</span>      i_data1 = (int8_t) i_data1;</div>
<div class="line"><a id="l01131" name="l01131"></a><span class="lineno"> 1131</span> </div>
<div class="line"><a id="l01132" name="l01132"></a><span class="lineno"> 1132</span>    <span class="keywordtype">int</span> idx = 4 * !i_mod;</div>
<div class="line"><a id="l01133" name="l01133"></a><span class="lineno"> 1133</span>    op_to_addr = rm_addr = i_mod &lt; 3 ? 16 * regs16[seg_override_en ? seg_override : instr_table_lookup[idx + 3][i_rm]] + (uint16_t)(regs16[instr_table_lookup[idx + 1][i_rm]] + instr_table_lookup[idx + 2][i_rm] * i_data1 + regs16[instr_table_lookup[idx][i_rm]]) : (regs_offset + (i_w ? 2 * i_rm : (2 * i_rm + i_rm / 4) &amp; 7));</div>
<div class="line"><a id="l01134" name="l01134"></a><span class="lineno"> 1134</span>    op_from_addr = regs_offset + (i_w ? 2 * i_reg : (2 * i_reg + i_reg / 4) &amp; 7);</div>
<div class="line"><a id="l01135" name="l01135"></a><span class="lineno"> 1135</span>    <span class="keywordflow">if</span> (i_d) {</div>
<div class="line"><a id="l01136" name="l01136"></a><span class="lineno"> 1136</span>      <span class="keyword">auto</span> t = op_from_addr;</div>
<div class="line"><a id="l01137" name="l01137"></a><span class="lineno"> 1137</span>      op_from_addr = rm_addr;</div>
<div class="line"><a id="l01138" name="l01138"></a><span class="lineno"> 1138</span>      op_to_addr = t;</div>
<div class="line"><a id="l01139" name="l01139"></a><span class="lineno"> 1139</span>    }</div>
<div class="line"><a id="l01140" name="l01140"></a><span class="lineno"> 1140</span>  }</div>
<div class="line"><a id="l01141" name="l01141"></a><span class="lineno"> 1141</span> </div>
<div class="line"><a id="l01142" name="l01142"></a><span class="lineno"> 1142</span>  <span class="comment">// Instruction execution unit</span></div>
<div class="line"><a id="l01143" name="l01143"></a><span class="lineno"> 1143</span>  <span class="keywordflow">switch</span> (xlat_opcode_id) {</div>
<div class="line"><a id="l01144" name="l01144"></a><span class="lineno"> 1144</span>    <span class="keywordflow">case</span> 2: <span class="comment">// INC|DEC regs16</span></div>
<div class="line"><a id="l01145" name="l01145"></a><span class="lineno"> 1145</span>    {</div>
<div class="line"><a id="l01146" name="l01146"></a><span class="lineno"> 1146</span>      i_w = 1;</div>
<div class="line"><a id="l01147" name="l01147"></a><span class="lineno"> 1147</span>      i_d = 0;</div>
<div class="line"><a id="l01148" name="l01148"></a><span class="lineno"> 1148</span>      i_reg = i_reg4bit;</div>
<div class="line"><a id="l01149" name="l01149"></a><span class="lineno"> 1149</span>      <span class="keywordtype">int</span> idx = 4 * !i_mod;</div>
<div class="line"><a id="l01150" name="l01150"></a><span class="lineno"> 1150</span>      op_to_addr = rm_addr = i_mod &lt; 3 ? 16 * regs16[seg_override_en ? seg_override : instr_table_lookup[idx + 3][i_rm]] + (uint16_t)(regs16[instr_table_lookup[idx + 1][i_rm]] + instr_table_lookup[idx + 2][i_rm] * i_data1 + regs16[instr_table_lookup[idx][i_rm]]) : (regs_offset + 2 * i_rm);</div>
<div class="line"><a id="l01151" name="l01151"></a><span class="lineno"> 1151</span>      op_from_addr = regs_offset + 2 * i_reg;</div>
<div class="line"><a id="l01152" name="l01152"></a><span class="lineno"> 1152</span>      i_reg = extra;</div>
<div class="line"><a id="l01153" name="l01153"></a><span class="lineno"> 1153</span>    } <span class="comment">// not break!</span></div>
<div class="line"><a id="l01154" name="l01154"></a><span class="lineno"> 1154</span>    <span class="keywordflow">case</span> 5: <span class="comment">// INC|DEC|JMP|CALL|PUSH</span></div>
<div class="line"><a id="l01155" name="l01155"></a><span class="lineno"> 1155</span>      <span class="keywordflow">if</span> (i_reg &lt; 2) {</div>
<div class="line"><a id="l01156" name="l01156"></a><span class="lineno"> 1156</span>        <span class="comment">// INC|DEC</span></div>
<div class="line"><a id="l01157" name="l01157"></a><span class="lineno"> 1157</span>        <span class="keywordflow">if</span> (i_w) {</div>
<div class="line"><a id="l01158" name="l01158"></a><span class="lineno"> 1158</span>          op_dest = RMEM16(op_from_addr);</div>
<div class="line"><a id="l01159" name="l01159"></a><span class="lineno"> 1159</span>          op_result = WMEM16(op_from_addr, (uint16_t)op_dest + 1 - 2 * i_reg);</div>
<div class="line"><a id="l01160" name="l01160"></a><span class="lineno"> 1160</span>        } <span class="keywordflow">else</span> {</div>
<div class="line"><a id="l01161" name="l01161"></a><span class="lineno"> 1161</span>          op_dest = RMEM8(op_from_addr);</div>
<div class="line"><a id="l01162" name="l01162"></a><span class="lineno"> 1162</span>          op_result = WMEM8(op_from_addr, (uint16_t)op_dest + 1 - 2 * i_reg);</div>
<div class="line"><a id="l01163" name="l01163"></a><span class="lineno"> 1163</span>        }</div>
<div class="line"><a id="l01164" name="l01164"></a><span class="lineno"> 1164</span>        op_source = 1;</div>
<div class="line"><a id="l01165" name="l01165"></a><span class="lineno"> 1165</span>        set_AF_OF_arith(op_result);</div>
<div class="line"><a id="l01166" name="l01166"></a><span class="lineno"> 1166</span>        FLAG_OF = (bool)(op_dest + 1 - i_reg == 1 &lt;&lt; (8 * (i_w + 1) - 1));</div>
<div class="line"><a id="l01167" name="l01167"></a><span class="lineno"> 1167</span>        <span class="keywordflow">if</span> (xlat_opcode_id == 5) {</div>
<div class="line"><a id="l01168" name="l01168"></a><span class="lineno"> 1168</span>          <span class="comment">// Decode like ADC (0x10)</span></div>
<div class="line"><a id="l01169" name="l01169"></a><span class="lineno"> 1169</span>          xlat_opcode_id = 0x10;</div>
<div class="line"><a id="l01170" name="l01170"></a><span class="lineno"> 1170</span>          set_flags_type = 1;</div>
<div class="line"><a id="l01171" name="l01171"></a><span class="lineno"> 1171</span>        }</div>
<div class="line"><a id="l01172" name="l01172"></a><span class="lineno"> 1172</span>      } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (i_reg != 6) {</div>
<div class="line"><a id="l01173" name="l01173"></a><span class="lineno"> 1173</span>        <span class="comment">// JMP|CALL</span></div>
<div class="line"><a id="l01174" name="l01174"></a><span class="lineno"> 1174</span>        uint16_t jumpTo = i_w ? MEM16(op_from_addr) : MEM8(op_from_addr);</div>
<div class="line"><a id="l01175" name="l01175"></a><span class="lineno"> 1175</span>        <span class="keywordflow">if</span> (i_reg - 3 == 0) {</div>
<div class="line"><a id="l01176" name="l01176"></a><span class="lineno"> 1176</span>          <span class="comment">// CALL (far)</span></div>
<div class="line"><a id="l01177" name="l01177"></a><span class="lineno"> 1177</span>          i_w = 1;</div>
<div class="line"><a id="l01178" name="l01178"></a><span class="lineno"> 1178</span>          regs16[REG_SP] -= 2;</div>
<div class="line"><a id="l01179" name="l01179"></a><span class="lineno"> 1179</span>          MEM16(16 * regs16[REG_SS] + regs16[REG_SP]) = regs16[REG_CS];</div>
<div class="line"><a id="l01180" name="l01180"></a><span class="lineno"> 1180</span>        }</div>
<div class="line"><a id="l01181" name="l01181"></a><span class="lineno"> 1181</span>        <span class="keywordflow">if</span> (i_reg &amp; 2) {</div>
<div class="line"><a id="l01182" name="l01182"></a><span class="lineno"> 1182</span>          <span class="comment">// CALL (near or far)</span></div>
<div class="line"><a id="l01183" name="l01183"></a><span class="lineno"> 1183</span>          i_w = 1;</div>
<div class="line"><a id="l01184" name="l01184"></a><span class="lineno"> 1184</span>          regs16[REG_SP] -= 2;</div>
<div class="line"><a id="l01185" name="l01185"></a><span class="lineno"> 1185</span>          MEM16(16 * regs16[REG_SS] + regs16[REG_SP]) = (reg_ip + 2 + i_mod * (i_mod != 3) + 2 * (!i_mod &amp;&amp; i_rm == 6));</div>
<div class="line"><a id="l01186" name="l01186"></a><span class="lineno"> 1186</span>        }</div>
<div class="line"><a id="l01187" name="l01187"></a><span class="lineno"> 1187</span>        <span class="keywordflow">if</span> (i_reg &amp; 1) {</div>
<div class="line"><a id="l01188" name="l01188"></a><span class="lineno"> 1188</span>          <span class="comment">// JMP|CALL (far)</span></div>
<div class="line"><a id="l01189" name="l01189"></a><span class="lineno"> 1189</span>          PSRAM_WORKAROUND2</div>
<div class="line"><a id="l01190" name="l01190"></a><span class="lineno"> 1190</span>          regs16[REG_CS] = MEM16(op_from_addr + 2);</div>
<div class="line"><a id="l01191" name="l01191"></a><span class="lineno"> 1191</span>        }</div>
<div class="line"><a id="l01192" name="l01192"></a><span class="lineno"> 1192</span>        reg_ip = jumpTo;</div>
<div class="line"><a id="l01193" name="l01193"></a><span class="lineno"> 1193</span>        <span class="keywordflow">return</span>; <span class="comment">// no calc IP, no flags</span></div>
<div class="line"><a id="l01194" name="l01194"></a><span class="lineno"> 1194</span>      } <span class="keywordflow">else</span> {</div>
<div class="line"><a id="l01195" name="l01195"></a><span class="lineno"> 1195</span>        <span class="comment">// PUSH</span></div>
<div class="line"><a id="l01196" name="l01196"></a><span class="lineno"> 1196</span>        i_w = 1;</div>
<div class="line"><a id="l01197" name="l01197"></a><span class="lineno"> 1197</span>        regs16[REG_SP] -= 2;</div>
<div class="line"><a id="l01198" name="l01198"></a><span class="lineno"> 1198</span>        MEM16(16 * regs16[REG_SS] + regs16[REG_SP]) = RMEM16(rm_addr);</div>
<div class="line"><a id="l01199" name="l01199"></a><span class="lineno"> 1199</span>      }</div>
<div class="line"><a id="l01200" name="l01200"></a><span class="lineno"> 1200</span>      <span class="keywordflow">break</span>;</div>
<div class="line"><a id="l01201" name="l01201"></a><span class="lineno"> 1201</span>    <span class="keywordflow">case</span> 6: <span class="comment">// TEST r/m, imm16 / NOT|NEG|MUL|IMUL|DIV|IDIV reg</span></div>
<div class="line"><a id="l01202" name="l01202"></a><span class="lineno"> 1202</span>      op_to_addr = op_from_addr;</div>
<div class="line"><a id="l01203" name="l01203"></a><span class="lineno"> 1203</span> </div>
<div class="line"><a id="l01204" name="l01204"></a><span class="lineno"> 1204</span>      <span class="keywordflow">switch</span> (i_reg) {</div>
<div class="line"><a id="l01205" name="l01205"></a><span class="lineno"> 1205</span>        <span class="keywordflow">case</span> 0: <span class="comment">// TEST</span></div>
<div class="line"><a id="l01206" name="l01206"></a><span class="lineno"> 1206</span>          <span class="comment">// Decode like AND (0x20)</span></div>
<div class="line"><a id="l01207" name="l01207"></a><span class="lineno"> 1207</span>          raw_opcode_id = 0x20;</div>
<div class="line"><a id="l01208" name="l01208"></a><span class="lineno"> 1208</span>          set_flags_type = 5;</div>
<div class="line"><a id="l01209" name="l01209"></a><span class="lineno"> 1209</span> </div>
<div class="line"><a id="l01210" name="l01210"></a><span class="lineno"> 1210</span>          reg_ip += i_w + 1;</div>
<div class="line"><a id="l01211" name="l01211"></a><span class="lineno"> 1211</span>          <span class="keywordflow">if</span> (i_w) {</div>
<div class="line"><a id="l01212" name="l01212"></a><span class="lineno"> 1212</span>            op_dest = RMEM16(op_to_addr);</div>
<div class="line"><a id="l01213" name="l01213"></a><span class="lineno"> 1213</span>            op_source = (uint16_t)i_data2;</div>
<div class="line"><a id="l01214" name="l01214"></a><span class="lineno"> 1214</span>            op_result = (uint16_t)(op_dest &amp; op_source);</div>
<div class="line"><a id="l01215" name="l01215"></a><span class="lineno"> 1215</span>          } <span class="keywordflow">else</span> {</div>
<div class="line"><a id="l01216" name="l01216"></a><span class="lineno"> 1216</span>            op_dest = RMEM8(op_to_addr);</div>
<div class="line"><a id="l01217" name="l01217"></a><span class="lineno"> 1217</span>            op_source = (uint8_t)i_data2;</div>
<div class="line"><a id="l01218" name="l01218"></a><span class="lineno"> 1218</span>            op_result = (uint8_t)(op_dest &amp; op_source);</div>
<div class="line"><a id="l01219" name="l01219"></a><span class="lineno"> 1219</span>          }</div>
<div class="line"><a id="l01220" name="l01220"></a><span class="lineno"> 1220</span>          <span class="keywordflow">break</span>;</div>
<div class="line"><a id="l01221" name="l01221"></a><span class="lineno"> 1221</span>        <span class="keywordflow">case</span> 2: <span class="comment">// NOT</span></div>
<div class="line"><a id="l01222" name="l01222"></a><span class="lineno"> 1222</span>          <span class="keywordflow">if</span> (i_w)</div>
<div class="line"><a id="l01223" name="l01223"></a><span class="lineno"> 1223</span>            WMEM16(op_to_addr, ~RMEM16(op_from_addr));</div>
<div class="line"><a id="l01224" name="l01224"></a><span class="lineno"> 1224</span>          <span class="keywordflow">else</span></div>
<div class="line"><a id="l01225" name="l01225"></a><span class="lineno"> 1225</span>            WMEM8(op_to_addr, ~RMEM8(op_from_addr));</div>
<div class="line"><a id="l01226" name="l01226"></a><span class="lineno"> 1226</span>          <span class="keywordflow">break</span>;</div>
<div class="line"><a id="l01227" name="l01227"></a><span class="lineno"> 1227</span>        <span class="keywordflow">case</span> 3: <span class="comment">// NEG</span></div>
<div class="line"><a id="l01228" name="l01228"></a><span class="lineno"> 1228</span>          <span class="keywordflow">if</span> (i_w)</div>
<div class="line"><a id="l01229" name="l01229"></a><span class="lineno"> 1229</span>            op_result = WMEM16(op_to_addr, -(op_source = RMEM16(op_from_addr)));</div>
<div class="line"><a id="l01230" name="l01230"></a><span class="lineno"> 1230</span>          <span class="keywordflow">else</span></div>
<div class="line"><a id="l01231" name="l01231"></a><span class="lineno"> 1231</span>            op_result = WMEM8(op_to_addr, -(op_source = RMEM8(op_from_addr)));</div>
<div class="line"><a id="l01232" name="l01232"></a><span class="lineno"> 1232</span>          op_dest = 0;</div>
<div class="line"><a id="l01233" name="l01233"></a><span class="lineno"> 1233</span> </div>
<div class="line"><a id="l01234" name="l01234"></a><span class="lineno"> 1234</span>          <span class="comment">// Decode like SUB (0x28)</span></div>
<div class="line"><a id="l01235" name="l01235"></a><span class="lineno"> 1235</span>          raw_opcode_id  = 0x28;</div>
<div class="line"><a id="l01236" name="l01236"></a><span class="lineno"> 1236</span>          set_flags_type = 3;</div>
<div class="line"><a id="l01237" name="l01237"></a><span class="lineno"> 1237</span> </div>
<div class="line"><a id="l01238" name="l01238"></a><span class="lineno"> 1238</span>          FLAG_CF = op_result &gt; op_dest;</div>
<div class="line"><a id="l01239" name="l01239"></a><span class="lineno"> 1239</span>          <span class="keywordflow">break</span>;</div>
<div class="line"><a id="l01240" name="l01240"></a><span class="lineno"> 1240</span>        <span class="keywordflow">case</span> 4: <span class="comment">// MUL</span></div>
<div class="line"><a id="l01241" name="l01241"></a><span class="lineno"> 1241</span>          raw_opcode_id  = 0x10;</div>
<div class="line"><a id="l01242" name="l01242"></a><span class="lineno"> 1242</span>          set_flags_type = 1;</div>
<div class="line"><a id="l01243" name="l01243"></a><span class="lineno"> 1243</span>          <span class="keywordflow">if</span> (i_w) {</div>
<div class="line"><a id="l01244" name="l01244"></a><span class="lineno"> 1244</span>            regs16[REG_DX] = (op_result = RMEM16(rm_addr) * regs16[REG_AX]) &gt;&gt; 16;</div>
<div class="line"><a id="l01245" name="l01245"></a><span class="lineno"> 1245</span>            regs16[REG_AX] = op_result;</div>
<div class="line"><a id="l01246" name="l01246"></a><span class="lineno"> 1246</span>            FLAG_OF = FLAG_CF = (bool)(op_result - (uint16_t)op_result);</div>
<div class="line"><a id="l01247" name="l01247"></a><span class="lineno"> 1247</span>          } <span class="keywordflow">else</span> {</div>
<div class="line"><a id="l01248" name="l01248"></a><span class="lineno"> 1248</span>            regs16[REG_AX] = op_result = RMEM8(rm_addr) * regs8[REG_AL];</div>
<div class="line"><a id="l01249" name="l01249"></a><span class="lineno"> 1249</span>            FLAG_OF = FLAG_CF = (bool)(op_result - (uint8_t) op_result);</div>
<div class="line"><a id="l01250" name="l01250"></a><span class="lineno"> 1250</span>          }</div>
<div class="line"><a id="l01251" name="l01251"></a><span class="lineno"> 1251</span>          <span class="keywordflow">break</span>;</div>
<div class="line"><a id="l01252" name="l01252"></a><span class="lineno"> 1252</span>        <span class="keywordflow">case</span> 5: <span class="comment">// IMUL</span></div>
<div class="line"><a id="l01253" name="l01253"></a><span class="lineno"> 1253</span>          raw_opcode_id  = 0x10;</div>
<div class="line"><a id="l01254" name="l01254"></a><span class="lineno"> 1254</span>          set_flags_type = 1;</div>
<div class="line"><a id="l01255" name="l01255"></a><span class="lineno"> 1255</span>          <span class="keywordflow">if</span> (i_w) {</div>
<div class="line"><a id="l01256" name="l01256"></a><span class="lineno"> 1256</span>            regs16[REG_DX] = (op_result = (int16_t)RMEM16(rm_addr) * (int16_t)regs16[REG_AX]) &gt;&gt; 16;</div>
<div class="line"><a id="l01257" name="l01257"></a><span class="lineno"> 1257</span>            regs16[REG_AX] = op_result;</div>
<div class="line"><a id="l01258" name="l01258"></a><span class="lineno"> 1258</span>            FLAG_OF = FLAG_CF = (bool)(op_result - (int16_t)op_result);</div>
<div class="line"><a id="l01259" name="l01259"></a><span class="lineno"> 1259</span>          } <span class="keywordflow">else</span> {</div>
<div class="line"><a id="l01260" name="l01260"></a><span class="lineno"> 1260</span>            regs16[REG_AX] = op_result = (int8_t)RMEM8(rm_addr) * (int8_t)regs8[REG_AL];</div>
<div class="line"><a id="l01261" name="l01261"></a><span class="lineno"> 1261</span>            FLAG_OF = FLAG_CF = (bool)(op_result - (int8_t) op_result);</div>
<div class="line"><a id="l01262" name="l01262"></a><span class="lineno"> 1262</span>          }</div>
<div class="line"><a id="l01263" name="l01263"></a><span class="lineno"> 1263</span>          <span class="keywordflow">break</span>;</div>
<div class="line"><a id="l01264" name="l01264"></a><span class="lineno"> 1264</span>        <span class="keywordflow">case</span> 6: <span class="comment">// DIV</span></div>
<div class="line"><a id="l01265" name="l01265"></a><span class="lineno"> 1265</span>        {</div>
<div class="line"><a id="l01266" name="l01266"></a><span class="lineno"> 1266</span>          int32_t scratch_int;</div>
<div class="line"><a id="l01267" name="l01267"></a><span class="lineno"> 1267</span>          int32_t scratch_uint, scratch2_uint;</div>
<div class="line"><a id="l01268" name="l01268"></a><span class="lineno"> 1268</span>          <span class="keywordflow">if</span> (i_w) {</div>
<div class="line"><a id="l01269" name="l01269"></a><span class="lineno"> 1269</span>            (scratch_int = RMEM16(rm_addr))</div>
<div class="line"><a id="l01270" name="l01270"></a><span class="lineno"> 1270</span>            &amp;&amp;</div>
<div class="line"><a id="l01271" name="l01271"></a><span class="lineno"> 1271</span>            !(scratch2_uint = (uint32_t)(scratch_uint = (regs16[REG_DX] &lt;&lt; 16) + regs16[REG_AX]) / scratch_int, scratch2_uint - (uint16_t) scratch2_uint)</div>
<div class="line"><a id="l01272" name="l01272"></a><span class="lineno"> 1272</span>            ?</div>
<div class="line"><a id="l01273" name="l01273"></a><span class="lineno"> 1273</span>            regs16[REG_DX] = scratch_uint - scratch_int * (regs16[REG_AX] = scratch2_uint)</div>
<div class="line"><a id="l01274" name="l01274"></a><span class="lineno"> 1274</span>            :</div>
<div class="line"><a id="l01275" name="l01275"></a><span class="lineno"> 1275</span>            (raiseDivideByZeroInterrupt(), calcIP = <span class="keyword">false</span>);</div>
<div class="line"><a id="l01276" name="l01276"></a><span class="lineno"> 1276</span>          } <span class="keywordflow">else</span> {</div>
<div class="line"><a id="l01277" name="l01277"></a><span class="lineno"> 1277</span>            (scratch_int = RMEM8(rm_addr))</div>
<div class="line"><a id="l01278" name="l01278"></a><span class="lineno"> 1278</span>            &amp;&amp;</div>
<div class="line"><a id="l01279" name="l01279"></a><span class="lineno"> 1279</span>            !(scratch2_uint = (uint16_t)(scratch_uint = regs16[REG_AX]) / scratch_int, scratch2_uint - (uint8_t) scratch2_uint)</div>
<div class="line"><a id="l01280" name="l01280"></a><span class="lineno"> 1280</span>            ?</div>
<div class="line"><a id="l01281" name="l01281"></a><span class="lineno"> 1281</span>            regs8[REG_AH] = scratch_uint - scratch_int * (regs8[REG_AL] = scratch2_uint)</div>
<div class="line"><a id="l01282" name="l01282"></a><span class="lineno"> 1282</span>            :</div>
<div class="line"><a id="l01283" name="l01283"></a><span class="lineno"> 1283</span>            (raiseDivideByZeroInterrupt(), calcIP = <span class="keyword">false</span>);</div>
<div class="line"><a id="l01284" name="l01284"></a><span class="lineno"> 1284</span>          }</div>
<div class="line"><a id="l01285" name="l01285"></a><span class="lineno"> 1285</span>          <span class="keywordflow">break</span>;</div>
<div class="line"><a id="l01286" name="l01286"></a><span class="lineno"> 1286</span>        }</div>
<div class="line"><a id="l01287" name="l01287"></a><span class="lineno"> 1287</span>        <span class="keywordflow">case</span> 7: <span class="comment">// IDIV</span></div>
<div class="line"><a id="l01288" name="l01288"></a><span class="lineno"> 1288</span>        {</div>
<div class="line"><a id="l01289" name="l01289"></a><span class="lineno"> 1289</span>          int32_t scratch_int;</div>
<div class="line"><a id="l01290" name="l01290"></a><span class="lineno"> 1290</span>          int32_t scratch2_uint, scratch_uint;</div>
<div class="line"><a id="l01291" name="l01291"></a><span class="lineno"> 1291</span>          <span class="keywordflow">if</span> (i_w) {</div>
<div class="line"><a id="l01292" name="l01292"></a><span class="lineno"> 1292</span>            (scratch_int = (int16_t)RMEM16(rm_addr))</div>
<div class="line"><a id="l01293" name="l01293"></a><span class="lineno"> 1293</span>            &amp;&amp;</div>
<div class="line"><a id="l01294" name="l01294"></a><span class="lineno"> 1294</span>            !(scratch2_uint = (<span class="keywordtype">int</span>)(scratch_uint = (regs16[REG_DX] &lt;&lt; 16) + regs16[REG_AX]) / scratch_int, scratch2_uint - (int16_t) scratch2_uint)</div>
<div class="line"><a id="l01295" name="l01295"></a><span class="lineno"> 1295</span>            ?</div>
<div class="line"><a id="l01296" name="l01296"></a><span class="lineno"> 1296</span>            regs16[REG_DX] = scratch_uint - scratch_int * (regs16[REG_AX] = scratch2_uint)</div>
<div class="line"><a id="l01297" name="l01297"></a><span class="lineno"> 1297</span>            :</div>
<div class="line"><a id="l01298" name="l01298"></a><span class="lineno"> 1298</span>            (raiseDivideByZeroInterrupt(), calcIP = <span class="keyword">false</span>);</div>
<div class="line"><a id="l01299" name="l01299"></a><span class="lineno"> 1299</span>          } <span class="keywordflow">else</span> {</div>
<div class="line"><a id="l01300" name="l01300"></a><span class="lineno"> 1300</span>            (scratch_int = (int8_t)RMEM8(rm_addr))</div>
<div class="line"><a id="l01301" name="l01301"></a><span class="lineno"> 1301</span>            &amp;&amp;</div>
<div class="line"><a id="l01302" name="l01302"></a><span class="lineno"> 1302</span>            !(scratch2_uint = (int16_t)(scratch_uint = regs16[REG_AX]) / scratch_int, scratch2_uint - (int8_t) scratch2_uint)</div>
<div class="line"><a id="l01303" name="l01303"></a><span class="lineno"> 1303</span>            ?</div>
<div class="line"><a id="l01304" name="l01304"></a><span class="lineno"> 1304</span>            regs8[REG_AH] = scratch_uint - scratch_int * (regs8[REG_AL] = scratch2_uint)</div>
<div class="line"><a id="l01305" name="l01305"></a><span class="lineno"> 1305</span>            :</div>
<div class="line"><a id="l01306" name="l01306"></a><span class="lineno"> 1306</span>            (raiseDivideByZeroInterrupt(), calcIP = <span class="keyword">false</span>);</div>
<div class="line"><a id="l01307" name="l01307"></a><span class="lineno"> 1307</span>          }</div>
<div class="line"><a id="l01308" name="l01308"></a><span class="lineno"> 1308</span>          <span class="keywordflow">break</span>;</div>
<div class="line"><a id="l01309" name="l01309"></a><span class="lineno"> 1309</span>        }</div>
<div class="line"><a id="l01310" name="l01310"></a><span class="lineno"> 1310</span>      };</div>
<div class="line"><a id="l01311" name="l01311"></a><span class="lineno"> 1311</span>      <span class="keywordflow">break</span>;</div>
<div class="line"><a id="l01312" name="l01312"></a><span class="lineno"> 1312</span>    <span class="keywordflow">case</span> 7: <span class="comment">// ADD|OR|ADC|SBB|AND|SUB|XOR|CMP AL/AX, immed</span></div>
<div class="line"><a id="l01313" name="l01313"></a><span class="lineno"> 1313</span>      rm_addr = regs_offset;</div>
<div class="line"><a id="l01314" name="l01314"></a><span class="lineno"> 1314</span>      i_data2 = i_data0;</div>
<div class="line"><a id="l01315" name="l01315"></a><span class="lineno"> 1315</span>      i_mod = 3;</div>
<div class="line"><a id="l01316" name="l01316"></a><span class="lineno"> 1316</span>      i_reg = extra;</div>
<div class="line"><a id="l01317" name="l01317"></a><span class="lineno"> 1317</span>      reg_ip--;</div>
<div class="line"><a id="l01318" name="l01318"></a><span class="lineno"> 1318</span>      <span class="comment">// not break!</span></div>
<div class="line"><a id="l01319" name="l01319"></a><span class="lineno"> 1319</span>    <span class="keywordflow">case</span> 8: <span class="comment">// ADD|OR|ADC|SBB|AND|SUB|XOR|CMP reg, immed</span></div>
<div class="line"><a id="l01320" name="l01320"></a><span class="lineno"> 1320</span>      op_to_addr = rm_addr;</div>
<div class="line"><a id="l01321" name="l01321"></a><span class="lineno"> 1321</span>      regs16[REG_SCRATCH] = (i_d |= !i_w) ? (int8_t) i_data2 : i_data2;</div>
<div class="line"><a id="l01322" name="l01322"></a><span class="lineno"> 1322</span>      op_from_addr = regs_offset + 2 * REG_SCRATCH;</div>
<div class="line"><a id="l01323" name="l01323"></a><span class="lineno"> 1323</span>      reg_ip += !i_d + 1;</div>
<div class="line"><a id="l01324" name="l01324"></a><span class="lineno"> 1324</span>      set_opcode(0x08 * (extra = i_reg));</div>
<div class="line"><a id="l01325" name="l01325"></a><span class="lineno"> 1325</span>      <span class="comment">// not break!</span></div>
<div class="line"><a id="l01326" name="l01326"></a><span class="lineno"> 1326</span>    <span class="keywordflow">case</span> 9: <span class="comment">// ADD|OR|ADC|SBB|AND|SUB|XOR|CMP|MOV reg, r/m</span></div>
<div class="line"><a id="l01327" name="l01327"></a><span class="lineno"> 1327</span>      <span class="keywordflow">switch</span> (extra) {</div>
<div class="line"><a id="l01328" name="l01328"></a><span class="lineno"> 1328</span>        <span class="keywordflow">case</span> 0: <span class="comment">// ADD</span></div>
<div class="line"><a id="l01329" name="l01329"></a><span class="lineno"> 1329</span>          <span class="keywordflow">if</span> (i_w) {</div>
<div class="line"><a id="l01330" name="l01330"></a><span class="lineno"> 1330</span>            op_dest   = RMEM16(op_to_addr);</div>
<div class="line"><a id="l01331" name="l01331"></a><span class="lineno"> 1331</span>            op_source = RMEM16(op_from_addr);</div>
<div class="line"><a id="l01332" name="l01332"></a><span class="lineno"> 1332</span>            op_result = (uint16_t)(op_dest + op_source);</div>
<div class="line"><a id="l01333" name="l01333"></a><span class="lineno"> 1333</span>            WMEM16(op_to_addr, op_result);</div>
<div class="line"><a id="l01334" name="l01334"></a><span class="lineno"> 1334</span>          } <span class="keywordflow">else</span> {</div>
<div class="line"><a id="l01335" name="l01335"></a><span class="lineno"> 1335</span>            op_dest   = RMEM8(op_to_addr);</div>
<div class="line"><a id="l01336" name="l01336"></a><span class="lineno"> 1336</span>            op_source = RMEM8(op_from_addr);</div>
<div class="line"><a id="l01337" name="l01337"></a><span class="lineno"> 1337</span>            op_result = (uint8_t)(op_dest + op_source);</div>
<div class="line"><a id="l01338" name="l01338"></a><span class="lineno"> 1338</span>            WMEM8(op_to_addr, op_result);</div>
<div class="line"><a id="l01339" name="l01339"></a><span class="lineno"> 1339</span>          }</div>
<div class="line"><a id="l01340" name="l01340"></a><span class="lineno"> 1340</span>          FLAG_CF = op_result &lt; op_dest;</div>
<div class="line"><a id="l01341" name="l01341"></a><span class="lineno"> 1341</span>          <span class="keywordflow">break</span>;</div>
<div class="line"><a id="l01342" name="l01342"></a><span class="lineno"> 1342</span>        <span class="keywordflow">case</span> 1: <span class="comment">// OR</span></div>
<div class="line"><a id="l01343" name="l01343"></a><span class="lineno"> 1343</span>          <span class="keywordflow">if</span> (i_w) {</div>
<div class="line"><a id="l01344" name="l01344"></a><span class="lineno"> 1344</span>            op_dest   = RMEM16(op_to_addr);</div>
<div class="line"><a id="l01345" name="l01345"></a><span class="lineno"> 1345</span>            op_source = RMEM16(op_from_addr);</div>
<div class="line"><a id="l01346" name="l01346"></a><span class="lineno"> 1346</span>            op_result = op_dest | op_source;</div>
<div class="line"><a id="l01347" name="l01347"></a><span class="lineno"> 1347</span>            WMEM16(op_to_addr, op_result);</div>
<div class="line"><a id="l01348" name="l01348"></a><span class="lineno"> 1348</span>          } <span class="keywordflow">else</span> {</div>
<div class="line"><a id="l01349" name="l01349"></a><span class="lineno"> 1349</span>            op_dest   = RMEM8(op_to_addr);</div>
<div class="line"><a id="l01350" name="l01350"></a><span class="lineno"> 1350</span>            op_source = RMEM8(op_from_addr);</div>
<div class="line"><a id="l01351" name="l01351"></a><span class="lineno"> 1351</span>            op_result = op_dest | op_source;</div>
<div class="line"><a id="l01352" name="l01352"></a><span class="lineno"> 1352</span>            WMEM8(op_to_addr, op_result);</div>
<div class="line"><a id="l01353" name="l01353"></a><span class="lineno"> 1353</span>          }</div>
<div class="line"><a id="l01354" name="l01354"></a><span class="lineno"> 1354</span>          <span class="keywordflow">break</span>;</div>
<div class="line"><a id="l01355" name="l01355"></a><span class="lineno"> 1355</span>        <span class="keywordflow">case</span> 2: <span class="comment">// ADC</span></div>
<div class="line"><a id="l01356" name="l01356"></a><span class="lineno"> 1356</span>          <span class="keywordflow">if</span> (i_w) {</div>
<div class="line"><a id="l01357" name="l01357"></a><span class="lineno"> 1357</span>            op_dest   = RMEM16(op_to_addr);</div>
<div class="line"><a id="l01358" name="l01358"></a><span class="lineno"> 1358</span>            op_source = RMEM16(op_from_addr);</div>
<div class="line"><a id="l01359" name="l01359"></a><span class="lineno"> 1359</span>            op_result = WMEM16(op_to_addr, op_dest + FLAG_CF + op_source);</div>
<div class="line"><a id="l01360" name="l01360"></a><span class="lineno"> 1360</span>          } <span class="keywordflow">else</span> {</div>
<div class="line"><a id="l01361" name="l01361"></a><span class="lineno"> 1361</span>            op_dest   = RMEM8(op_to_addr);</div>
<div class="line"><a id="l01362" name="l01362"></a><span class="lineno"> 1362</span>            op_source = RMEM8(op_from_addr);</div>
<div class="line"><a id="l01363" name="l01363"></a><span class="lineno"> 1363</span>            op_result = WMEM8(op_to_addr, op_dest + FLAG_CF + op_source);</div>
<div class="line"><a id="l01364" name="l01364"></a><span class="lineno"> 1364</span>          }</div>
<div class="line"><a id="l01365" name="l01365"></a><span class="lineno"> 1365</span>          FLAG_CF = (FLAG_CF &amp;&amp; (op_result == op_dest)) || (op_result &lt; (int) op_dest);</div>
<div class="line"><a id="l01366" name="l01366"></a><span class="lineno"> 1366</span>          set_AF_OF_arith(op_result);</div>
<div class="line"><a id="l01367" name="l01367"></a><span class="lineno"> 1367</span>          <span class="keywordflow">break</span>;</div>
<div class="line"><a id="l01368" name="l01368"></a><span class="lineno"> 1368</span>        <span class="keywordflow">case</span> 3: <span class="comment">// SBB</span></div>
<div class="line"><a id="l01369" name="l01369"></a><span class="lineno"> 1369</span>          <span class="keywordflow">if</span> (i_w) {</div>
<div class="line"><a id="l01370" name="l01370"></a><span class="lineno"> 1370</span>            op_dest   = RMEM16(op_to_addr);</div>
<div class="line"><a id="l01371" name="l01371"></a><span class="lineno"> 1371</span>            op_source = RMEM16(op_from_addr);</div>
<div class="line"><a id="l01372" name="l01372"></a><span class="lineno"> 1372</span>            op_result = WMEM16(op_to_addr, op_dest - (FLAG_CF + op_source));</div>
<div class="line"><a id="l01373" name="l01373"></a><span class="lineno"> 1373</span>          } <span class="keywordflow">else</span> {</div>
<div class="line"><a id="l01374" name="l01374"></a><span class="lineno"> 1374</span>            op_dest   = RMEM8(op_to_addr);</div>
<div class="line"><a id="l01375" name="l01375"></a><span class="lineno"> 1375</span>            op_source = RMEM8(op_from_addr);</div>
<div class="line"><a id="l01376" name="l01376"></a><span class="lineno"> 1376</span>            op_result = WMEM8(op_to_addr, op_dest - (FLAG_CF + op_source));</div>
<div class="line"><a id="l01377" name="l01377"></a><span class="lineno"> 1377</span>          }</div>
<div class="line"><a id="l01378" name="l01378"></a><span class="lineno"> 1378</span>          FLAG_CF = (FLAG_CF &amp;&amp; (op_result == op_dest)) || (-op_result &lt; -(int) op_dest);</div>
<div class="line"><a id="l01379" name="l01379"></a><span class="lineno"> 1379</span>          set_AF_OF_arith(op_result);</div>
<div class="line"><a id="l01380" name="l01380"></a><span class="lineno"> 1380</span>          <span class="keywordflow">break</span>;</div>
<div class="line"><a id="l01381" name="l01381"></a><span class="lineno"> 1381</span>        <span class="keywordflow">case</span> 4: <span class="comment">// AND</span></div>
<div class="line"><a id="l01382" name="l01382"></a><span class="lineno"> 1382</span>          <span class="keywordflow">if</span> (i_w) {</div>
<div class="line"><a id="l01383" name="l01383"></a><span class="lineno"> 1383</span>            op_dest   = RMEM16(op_to_addr);</div>
<div class="line"><a id="l01384" name="l01384"></a><span class="lineno"> 1384</span>            op_source = RMEM16(op_from_addr);</div>
<div class="line"><a id="l01385" name="l01385"></a><span class="lineno"> 1385</span>            op_result = op_dest &amp; op_source;</div>
<div class="line"><a id="l01386" name="l01386"></a><span class="lineno"> 1386</span>            WMEM16(op_to_addr, op_result);</div>
<div class="line"><a id="l01387" name="l01387"></a><span class="lineno"> 1387</span>          } <span class="keywordflow">else</span> {</div>
<div class="line"><a id="l01388" name="l01388"></a><span class="lineno"> 1388</span>            op_dest   = RMEM8(op_to_addr);</div>
<div class="line"><a id="l01389" name="l01389"></a><span class="lineno"> 1389</span>            op_source = RMEM8(op_from_addr);</div>
<div class="line"><a id="l01390" name="l01390"></a><span class="lineno"> 1390</span>            op_result = op_dest &amp; op_source;</div>
<div class="line"><a id="l01391" name="l01391"></a><span class="lineno"> 1391</span>            WMEM8(op_to_addr, op_result);</div>
<div class="line"><a id="l01392" name="l01392"></a><span class="lineno"> 1392</span>          }</div>
<div class="line"><a id="l01393" name="l01393"></a><span class="lineno"> 1393</span>          <span class="keywordflow">break</span>;</div>
<div class="line"><a id="l01394" name="l01394"></a><span class="lineno"> 1394</span>        <span class="keywordflow">case</span> 5: <span class="comment">// SUB</span></div>
<div class="line"><a id="l01395" name="l01395"></a><span class="lineno"> 1395</span>          <span class="keywordflow">if</span> (i_w) {</div>
<div class="line"><a id="l01396" name="l01396"></a><span class="lineno"> 1396</span>            op_dest   = RMEM16(op_to_addr);</div>
<div class="line"><a id="l01397" name="l01397"></a><span class="lineno"> 1397</span>            op_source = RMEM16(op_from_addr);</div>
<div class="line"><a id="l01398" name="l01398"></a><span class="lineno"> 1398</span>            op_result = WMEM16(op_to_addr, op_dest - op_source);</div>
<div class="line"><a id="l01399" name="l01399"></a><span class="lineno"> 1399</span>          } <span class="keywordflow">else</span> {</div>
<div class="line"><a id="l01400" name="l01400"></a><span class="lineno"> 1400</span>            op_dest   = RMEM8(op_to_addr);</div>
<div class="line"><a id="l01401" name="l01401"></a><span class="lineno"> 1401</span>            op_source = RMEM8(op_from_addr);</div>
<div class="line"><a id="l01402" name="l01402"></a><span class="lineno"> 1402</span>            op_result = WMEM8(op_to_addr, op_dest - op_source);</div>
<div class="line"><a id="l01403" name="l01403"></a><span class="lineno"> 1403</span>          }</div>
<div class="line"><a id="l01404" name="l01404"></a><span class="lineno"> 1404</span>          FLAG_CF = op_result &gt; op_dest;</div>
<div class="line"><a id="l01405" name="l01405"></a><span class="lineno"> 1405</span>          <span class="keywordflow">break</span>;</div>
<div class="line"><a id="l01406" name="l01406"></a><span class="lineno"> 1406</span>        <span class="keywordflow">case</span> 6: <span class="comment">// XOR</span></div>
<div class="line"><a id="l01407" name="l01407"></a><span class="lineno"> 1407</span>          <span class="keywordflow">if</span> (i_w) {</div>
<div class="line"><a id="l01408" name="l01408"></a><span class="lineno"> 1408</span>            op_dest   = RMEM16(op_to_addr);</div>
<div class="line"><a id="l01409" name="l01409"></a><span class="lineno"> 1409</span>            op_source = RMEM16(op_from_addr);</div>
<div class="line"><a id="l01410" name="l01410"></a><span class="lineno"> 1410</span>            op_result = op_dest ^ op_source;</div>
<div class="line"><a id="l01411" name="l01411"></a><span class="lineno"> 1411</span>            WMEM16(op_to_addr, op_result);</div>
<div class="line"><a id="l01412" name="l01412"></a><span class="lineno"> 1412</span>          } <span class="keywordflow">else</span> {</div>
<div class="line"><a id="l01413" name="l01413"></a><span class="lineno"> 1413</span>            op_dest   = RMEM8(op_to_addr);</div>
<div class="line"><a id="l01414" name="l01414"></a><span class="lineno"> 1414</span>            op_source = RMEM8(op_from_addr);</div>
<div class="line"><a id="l01415" name="l01415"></a><span class="lineno"> 1415</span>            op_result = op_dest ^ op_source;</div>
<div class="line"><a id="l01416" name="l01416"></a><span class="lineno"> 1416</span>            WMEM8(op_to_addr, op_result);</div>
<div class="line"><a id="l01417" name="l01417"></a><span class="lineno"> 1417</span>          }</div>
<div class="line"><a id="l01418" name="l01418"></a><span class="lineno"> 1418</span>          <span class="keywordflow">break</span>;</div>
<div class="line"><a id="l01419" name="l01419"></a><span class="lineno"> 1419</span>        <span class="keywordflow">case</span> 7: <span class="comment">// CMP</span></div>
<div class="line"><a id="l01420" name="l01420"></a><span class="lineno"> 1420</span>          <span class="keywordflow">if</span> (i_w) {</div>
<div class="line"><a id="l01421" name="l01421"></a><span class="lineno"> 1421</span>            op_dest   = RMEM16(op_to_addr);</div>
<div class="line"><a id="l01422" name="l01422"></a><span class="lineno"> 1422</span>            op_source = RMEM16(op_from_addr);</div>
<div class="line"><a id="l01423" name="l01423"></a><span class="lineno"> 1423</span>          } <span class="keywordflow">else</span> {</div>
<div class="line"><a id="l01424" name="l01424"></a><span class="lineno"> 1424</span>            op_dest   = RMEM8(op_to_addr);</div>
<div class="line"><a id="l01425" name="l01425"></a><span class="lineno"> 1425</span>            op_source = RMEM8(op_from_addr);</div>
<div class="line"><a id="l01426" name="l01426"></a><span class="lineno"> 1426</span>          }</div>
<div class="line"><a id="l01427" name="l01427"></a><span class="lineno"> 1427</span>          op_result = op_dest - op_source;</div>
<div class="line"><a id="l01428" name="l01428"></a><span class="lineno"> 1428</span>          FLAG_CF = op_result &gt; op_dest;</div>
<div class="line"><a id="l01429" name="l01429"></a><span class="lineno"> 1429</span>          <span class="keywordflow">break</span>;</div>
<div class="line"><a id="l01430" name="l01430"></a><span class="lineno"> 1430</span>        <span class="keywordflow">case</span> 8: <span class="comment">// MOV</span></div>
<div class="line"><a id="l01431" name="l01431"></a><span class="lineno"> 1431</span>          <span class="keywordflow">if</span> (i_w) {</div>
<div class="line"><a id="l01432" name="l01432"></a><span class="lineno"> 1432</span>            WMEM16(op_to_addr, RMEM16(op_from_addr));</div>
<div class="line"><a id="l01433" name="l01433"></a><span class="lineno"> 1433</span>          } <span class="keywordflow">else</span> {</div>
<div class="line"><a id="l01434" name="l01434"></a><span class="lineno"> 1434</span>            WMEM8(op_to_addr, RMEM8(op_from_addr));</div>
<div class="line"><a id="l01435" name="l01435"></a><span class="lineno"> 1435</span>          }</div>
<div class="line"><a id="l01436" name="l01436"></a><span class="lineno"> 1436</span>          <span class="keywordflow">break</span>;</div>
<div class="line"><a id="l01437" name="l01437"></a><span class="lineno"> 1437</span>      };</div>
<div class="line"><a id="l01438" name="l01438"></a><span class="lineno"> 1438</span>      <span class="keywordflow">break</span>;</div>
<div class="line"><a id="l01439" name="l01439"></a><span class="lineno"> 1439</span>    <span class="keywordflow">case</span> 10: <span class="comment">// MOV sreg, r/m | POP r/m | LEA reg, r/m</span></div>
<div class="line"><a id="l01440" name="l01440"></a><span class="lineno"> 1440</span>      <span class="keywordflow">if</span> (!i_w) { <span class="comment">// i_w == 0</span></div>
<div class="line"><a id="l01441" name="l01441"></a><span class="lineno"> 1441</span>        <span class="comment">// MOV</span></div>
<div class="line"><a id="l01442" name="l01442"></a><span class="lineno"> 1442</span>        i_w = 1;</div>
<div class="line"><a id="l01443" name="l01443"></a><span class="lineno"> 1443</span>        i_reg += 8;</div>
<div class="line"><a id="l01444" name="l01444"></a><span class="lineno"> 1444</span>        int32_t scratch2_uint = 4 * !i_mod;</div>
<div class="line"><a id="l01445" name="l01445"></a><span class="lineno"> 1445</span>        rm_addr = i_mod &lt; 3 ?</div>
<div class="line"><a id="l01446" name="l01446"></a><span class="lineno"> 1446</span>                              16 * regs16[seg_override_en ?</div>
<div class="line"><a id="l01447" name="l01447"></a><span class="lineno"> 1447</span>                                                            seg_override</div>
<div class="line"><a id="l01448" name="l01448"></a><span class="lineno"> 1448</span>                                                          : instr_table_lookup[scratch2_uint + 3][i_rm]] + (uint16_t)(regs16[instr_table_lookup[scratch2_uint + 1][i_rm]] + instr_table_lookup[scratch2_uint + 2][i_rm] * i_data1 + regs16[instr_table_lookup[scratch2_uint][i_rm]])</div>
<div class="line"><a id="l01449" name="l01449"></a><span class="lineno"> 1449</span>                            : (regs_offset + (2 * i_rm));</div>
<div class="line"><a id="l01450" name="l01450"></a><span class="lineno"> 1450</span>        <span class="keywordflow">if</span> (i_d) {</div>
<div class="line"><a id="l01451" name="l01451"></a><span class="lineno"> 1451</span>          regs16[i_reg] = RMEM16(rm_addr);</div>
<div class="line"><a id="l01452" name="l01452"></a><span class="lineno"> 1452</span>        } <span class="keywordflow">else</span> {</div>
<div class="line"><a id="l01453" name="l01453"></a><span class="lineno"> 1453</span>          WMEM16(rm_addr, regs16[i_reg]);</div>
<div class="line"><a id="l01454" name="l01454"></a><span class="lineno"> 1454</span>        }</div>
<div class="line"><a id="l01455" name="l01455"></a><span class="lineno"> 1455</span>      } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (!i_d) {  <span class="comment">// i_w == 1 &amp;&amp; i_d == 0</span></div>
<div class="line"><a id="l01456" name="l01456"></a><span class="lineno"> 1456</span>        <span class="comment">// LEA</span></div>
<div class="line"><a id="l01457" name="l01457"></a><span class="lineno"> 1457</span>        <span class="keywordtype">int</span> idx = 4 * !i_mod;</div>
<div class="line"><a id="l01458" name="l01458"></a><span class="lineno"> 1458</span>        regs16[i_reg] = regs16[instr_table_lookup[idx + 1][i_rm]] + instr_table_lookup[idx + 2][i_rm] * i_data1 + regs16[instr_table_lookup[idx][i_rm]];</div>
<div class="line"><a id="l01459" name="l01459"></a><span class="lineno"> 1459</span>      } <span class="keywordflow">else</span> {  <span class="comment">// i_w == 1 &amp;&amp; i_d == 1</span></div>
<div class="line"><a id="l01460" name="l01460"></a><span class="lineno"> 1460</span>        <span class="comment">// POP</span></div>
<div class="line"><a id="l01461" name="l01461"></a><span class="lineno"> 1461</span>        regs16[REG_SP] += 2;</div>
<div class="line"><a id="l01462" name="l01462"></a><span class="lineno"> 1462</span>        WMEM16(rm_addr, MEM16(16 * regs16[REG_SS] + (uint16_t)(-2 + regs16[REG_SP])));</div>
<div class="line"><a id="l01463" name="l01463"></a><span class="lineno"> 1463</span>      }</div>
<div class="line"><a id="l01464" name="l01464"></a><span class="lineno"> 1464</span>      <span class="keywordflow">break</span>;</div>
<div class="line"><a id="l01465" name="l01465"></a><span class="lineno"> 1465</span>    <span class="keywordflow">case</span> 11: <span class="comment">// MOV AL/AX, [loc]</span></div>
<div class="line"><a id="l01466" name="l01466"></a><span class="lineno"> 1466</span>      rm_addr = 16 * regs16[seg_override_en ? seg_override : REG_DS] + i_data0;</div>
<div class="line"><a id="l01467" name="l01467"></a><span class="lineno"> 1467</span>      <span class="keywordflow">if</span> (i_d) {</div>
<div class="line"><a id="l01468" name="l01468"></a><span class="lineno"> 1468</span>        <span class="keywordflow">if</span> (i_w) {</div>
<div class="line"><a id="l01469" name="l01469"></a><span class="lineno"> 1469</span>          WMEM16(rm_addr, regs16[REG_AX]);</div>
<div class="line"><a id="l01470" name="l01470"></a><span class="lineno"> 1470</span>        } <span class="keywordflow">else</span> {</div>
<div class="line"><a id="l01471" name="l01471"></a><span class="lineno"> 1471</span>          WMEM8(rm_addr, regs8[REG_AL]);</div>
<div class="line"><a id="l01472" name="l01472"></a><span class="lineno"> 1472</span>        }</div>
<div class="line"><a id="l01473" name="l01473"></a><span class="lineno"> 1473</span>      } <span class="keywordflow">else</span> {</div>
<div class="line"><a id="l01474" name="l01474"></a><span class="lineno"> 1474</span>        <span class="keywordflow">if</span> (i_w) {</div>
<div class="line"><a id="l01475" name="l01475"></a><span class="lineno"> 1475</span>          regs16[REG_AX] = RMEM16(rm_addr);</div>
<div class="line"><a id="l01476" name="l01476"></a><span class="lineno"> 1476</span>        } <span class="keywordflow">else</span> {</div>
<div class="line"><a id="l01477" name="l01477"></a><span class="lineno"> 1477</span>          regs8[REG_AL] = RMEM8(rm_addr);</div>
<div class="line"><a id="l01478" name="l01478"></a><span class="lineno"> 1478</span>        }</div>
<div class="line"><a id="l01479" name="l01479"></a><span class="lineno"> 1479</span>      }</div>
<div class="line"><a id="l01480" name="l01480"></a><span class="lineno"> 1480</span>      reg_ip += 3;</div>
<div class="line"><a id="l01481" name="l01481"></a><span class="lineno"> 1481</span>      <span class="keywordflow">return</span>; <span class="comment">// no calc IP, no flags</span></div>
<div class="line"><a id="l01482" name="l01482"></a><span class="lineno"> 1482</span>    <span class="keywordflow">case</span> 12: <span class="comment">// ROL|ROR|RCL|RCR|SHL|SHR|???|SAR reg/MEM, 1/CL/imm (80186)</span></div>
<div class="line"><a id="l01483" name="l01483"></a><span class="lineno"> 1483</span>    {</div>
<div class="line"><a id="l01484" name="l01484"></a><span class="lineno"> 1484</span>      uint16_t scratch2_uint = (1 &amp; (i_w ? (int16_t)RMEM16(rm_addr) : RMEM8(rm_addr)) &gt;&gt; (8 * (i_w + 1) - 1));</div>
<div class="line"><a id="l01485" name="l01485"></a><span class="lineno"> 1485</span>      uint16_t scratch_uint  = extra ? <span class="comment">// xxx reg/MEM, imm</span></div>
<div class="line"><a id="l01486" name="l01486"></a><span class="lineno"> 1486</span>        (int8_t) i_data1 : <span class="comment">// xxx reg/MEM, CL</span></div>
<div class="line"><a id="l01487" name="l01487"></a><span class="lineno"> 1487</span>        i_d ?</div>
<div class="line"><a id="l01488" name="l01488"></a><span class="lineno"> 1488</span>        31 &amp; regs8[REG_CL] : <span class="comment">// xxx reg/MEM, 1</span></div>
<div class="line"><a id="l01489" name="l01489"></a><span class="lineno"> 1489</span>        1;</div>
<div class="line"><a id="l01490" name="l01490"></a><span class="lineno"> 1490</span>      <span class="keywordflow">if</span> (scratch_uint) {</div>
<div class="line"><a id="l01491" name="l01491"></a><span class="lineno"> 1491</span>        <span class="keywordflow">if</span> (i_reg &lt; 4) {</div>
<div class="line"><a id="l01492" name="l01492"></a><span class="lineno"> 1492</span>          <span class="comment">// Rotate operations</span></div>
<div class="line"><a id="l01493" name="l01493"></a><span class="lineno"> 1493</span>          scratch_uint %= i_reg / 2 + 8 * (i_w + 1);</div>
<div class="line"><a id="l01494" name="l01494"></a><span class="lineno"> 1494</span>          scratch2_uint = i_w ? RMEM16(rm_addr) : RMEM8(rm_addr);</div>
<div class="line"><a id="l01495" name="l01495"></a><span class="lineno"> 1495</span>        }</div>
<div class="line"><a id="l01496" name="l01496"></a><span class="lineno"> 1496</span>        <span class="keywordflow">if</span> (i_reg &amp; 1) {</div>
<div class="line"><a id="l01497" name="l01497"></a><span class="lineno"> 1497</span>          <span class="comment">// Rotate/shift right operations</span></div>
<div class="line"><a id="l01498" name="l01498"></a><span class="lineno"> 1498</span>          <span class="keywordflow">if</span> (i_w) {</div>
<div class="line"><a id="l01499" name="l01499"></a><span class="lineno"> 1499</span>            op_dest   = RMEM16(rm_addr);</div>
<div class="line"><a id="l01500" name="l01500"></a><span class="lineno"> 1500</span>            op_result = WMEM16(rm_addr, (uint16_t)op_dest &gt;&gt; scratch_uint);</div>
<div class="line"><a id="l01501" name="l01501"></a><span class="lineno"> 1501</span>          } <span class="keywordflow">else</span> {</div>
<div class="line"><a id="l01502" name="l01502"></a><span class="lineno"> 1502</span>            op_dest   = RMEM8(rm_addr);</div>
<div class="line"><a id="l01503" name="l01503"></a><span class="lineno"> 1503</span>            op_result = WMEM8(rm_addr, (uint8_t)op_dest &gt;&gt; (uint8_t)scratch_uint);</div>
<div class="line"><a id="l01504" name="l01504"></a><span class="lineno"> 1504</span>          }</div>
<div class="line"><a id="l01505" name="l01505"></a><span class="lineno"> 1505</span>        } <span class="keywordflow">else</span> {</div>
<div class="line"><a id="l01506" name="l01506"></a><span class="lineno"> 1506</span>          <span class="comment">// Rotate/shift left operations</span></div>
<div class="line"><a id="l01507" name="l01507"></a><span class="lineno"> 1507</span>          <span class="keywordflow">if</span> (i_w) {</div>
<div class="line"><a id="l01508" name="l01508"></a><span class="lineno"> 1508</span>            op_dest   = RMEM16(rm_addr);</div>
<div class="line"><a id="l01509" name="l01509"></a><span class="lineno"> 1509</span>            op_result = WMEM16(rm_addr, (uint16_t)op_dest &lt;&lt; scratch_uint);</div>
<div class="line"><a id="l01510" name="l01510"></a><span class="lineno"> 1510</span>          } <span class="keywordflow">else</span> {</div>
<div class="line"><a id="l01511" name="l01511"></a><span class="lineno"> 1511</span>            op_dest   = RMEM8(rm_addr);</div>
<div class="line"><a id="l01512" name="l01512"></a><span class="lineno"> 1512</span>            op_result = WMEM8(rm_addr, (uint8_t)op_dest &lt;&lt; (uint8_t)scratch_uint);</div>
<div class="line"><a id="l01513" name="l01513"></a><span class="lineno"> 1513</span>          }</div>
<div class="line"><a id="l01514" name="l01514"></a><span class="lineno"> 1514</span>        }</div>
<div class="line"><a id="l01515" name="l01515"></a><span class="lineno"> 1515</span>        <span class="keywordflow">if</span> (i_reg &gt; 3) <span class="comment">// Shift operations</span></div>
<div class="line"><a id="l01516" name="l01516"></a><span class="lineno"> 1516</span>          set_flags_type = 1; <span class="comment">// Shift instructions affect SZP</span></div>
<div class="line"><a id="l01517" name="l01517"></a><span class="lineno"> 1517</span>        <span class="keywordflow">if</span> (i_reg &gt; 4) <span class="comment">// SHR or SAR</span></div>
<div class="line"><a id="l01518" name="l01518"></a><span class="lineno"> 1518</span>          FLAG_CF = op_dest &gt;&gt; (scratch_uint - 1) &amp; 1;</div>
<div class="line"><a id="l01519" name="l01519"></a><span class="lineno"> 1519</span>      }</div>
<div class="line"><a id="l01520" name="l01520"></a><span class="lineno"> 1520</span> </div>
<div class="line"><a id="l01521" name="l01521"></a><span class="lineno"> 1521</span>      <span class="keywordflow">switch</span> (i_reg) {</div>
<div class="line"><a id="l01522" name="l01522"></a><span class="lineno"> 1522</span>        <span class="keywordflow">case</span> 0: <span class="comment">// ROL</span></div>
<div class="line"><a id="l01523" name="l01523"></a><span class="lineno"> 1523</span>          <span class="keywordflow">if</span> (i_w) {</div>
<div class="line"><a id="l01524" name="l01524"></a><span class="lineno"> 1524</span>            op_dest   = RMEM16(rm_addr);</div>
<div class="line"><a id="l01525" name="l01525"></a><span class="lineno"> 1525</span>            op_result = WMEM16(rm_addr, (uint16_t)op_dest + (op_source = scratch2_uint &gt;&gt; (16 - scratch_uint)));</div>
<div class="line"><a id="l01526" name="l01526"></a><span class="lineno"> 1526</span>          } <span class="keywordflow">else</span> {</div>
<div class="line"><a id="l01527" name="l01527"></a><span class="lineno"> 1527</span>            op_dest   = RMEM8(rm_addr);</div>
<div class="line"><a id="l01528" name="l01528"></a><span class="lineno"> 1528</span>            op_result = WMEM8(rm_addr, (uint8_t)op_dest + (op_source = (uint8_t)scratch2_uint &gt;&gt; (8 - scratch_uint)));</div>
<div class="line"><a id="l01529" name="l01529"></a><span class="lineno"> 1529</span>          }</div>
<div class="line"><a id="l01530" name="l01530"></a><span class="lineno"> 1530</span>          <span class="keywordflow">if</span> (scratch_uint) <span class="comment">// fab: zero shift/rotation doesn&#39;t change CF or OF (&quot;rotate.asm&quot; and &quot;shift.asm&quot; tests)</span></div>
<div class="line"><a id="l01531" name="l01531"></a><span class="lineno"> 1531</span>            FLAG_OF = (1 &amp; op_result &gt;&gt; (8 * (i_w + 1) - 1)) ^ (FLAG_CF = op_result &amp; 1);</div>
<div class="line"><a id="l01532" name="l01532"></a><span class="lineno"> 1532</span>          <span class="keywordflow">break</span>;</div>
<div class="line"><a id="l01533" name="l01533"></a><span class="lineno"> 1533</span>        <span class="keywordflow">case</span> 1: <span class="comment">// ROR</span></div>
<div class="line"><a id="l01534" name="l01534"></a><span class="lineno"> 1534</span>          scratch2_uint &amp;= (1 &lt;&lt; scratch_uint) - 1;</div>
<div class="line"><a id="l01535" name="l01535"></a><span class="lineno"> 1535</span>          <span class="keywordflow">if</span> (i_w) {</div>
<div class="line"><a id="l01536" name="l01536"></a><span class="lineno"> 1536</span>            op_dest   = RMEM16(rm_addr);</div>
<div class="line"><a id="l01537" name="l01537"></a><span class="lineno"> 1537</span>            op_result = WMEM16(rm_addr, (uint16_t)op_dest + (op_source = scratch2_uint &lt;&lt; (16 - scratch_uint)));</div>
<div class="line"><a id="l01538" name="l01538"></a><span class="lineno"> 1538</span>          } <span class="keywordflow">else</span> {</div>
<div class="line"><a id="l01539" name="l01539"></a><span class="lineno"> 1539</span>            op_dest   = RMEM8(rm_addr);</div>
<div class="line"><a id="l01540" name="l01540"></a><span class="lineno"> 1540</span>            op_result = WMEM8(rm_addr, (uint8_t)op_dest + (op_source = (uint8_t)scratch2_uint &lt;&lt; (8 - scratch_uint)));</div>
<div class="line"><a id="l01541" name="l01541"></a><span class="lineno"> 1541</span>          }</div>
<div class="line"><a id="l01542" name="l01542"></a><span class="lineno"> 1542</span>          <span class="keywordflow">if</span> (scratch_uint) <span class="comment">// fab: zero shift/rotation doesn&#39;t change CF or OF (&quot;rotate.asm&quot; and &quot;shift.asm&quot; tests)</span></div>
<div class="line"><a id="l01543" name="l01543"></a><span class="lineno"> 1543</span>            FLAG_OF = (1 &amp; (i_w ? (int16_t)op_result * 2 : op_result * 2) &gt;&gt; (8 * (i_w + 1) - 1)) ^ (FLAG_CF = 1 &amp; (i_w ? (int16_t)op_result : op_result) &gt;&gt; (8 * (i_w + 1) - 1));</div>
<div class="line"><a id="l01544" name="l01544"></a><span class="lineno"> 1544</span>            ;</div>
<div class="line"><a id="l01545" name="l01545"></a><span class="lineno"> 1545</span>          <span class="keywordflow">break</span>;</div>
<div class="line"><a id="l01546" name="l01546"></a><span class="lineno"> 1546</span>        <span class="keywordflow">case</span> 2: <span class="comment">// RCL</span></div>
<div class="line"><a id="l01547" name="l01547"></a><span class="lineno"> 1547</span>          <span class="keywordflow">if</span> (i_w) {</div>
<div class="line"><a id="l01548" name="l01548"></a><span class="lineno"> 1548</span>            op_dest   = RMEM16(rm_addr);</div>
<div class="line"><a id="l01549" name="l01549"></a><span class="lineno"> 1549</span>            op_result = WMEM16(rm_addr, (uint16_t)op_dest + (FLAG_CF &lt;&lt; (scratch_uint - 1)) + (op_source = scratch2_uint &gt;&gt; (17 - scratch_uint)));</div>
<div class="line"><a id="l01550" name="l01550"></a><span class="lineno"> 1550</span>          } <span class="keywordflow">else</span> {</div>
<div class="line"><a id="l01551" name="l01551"></a><span class="lineno"> 1551</span>            op_dest   = RMEM8(rm_addr);</div>
<div class="line"><a id="l01552" name="l01552"></a><span class="lineno"> 1552</span>            op_result = WMEM8(rm_addr, (uint8_t)op_dest + (FLAG_CF &lt;&lt; (scratch_uint - 1)) + (op_source = (uint8_t)scratch2_uint &gt;&gt; (9 - scratch_uint)));</div>
<div class="line"><a id="l01553" name="l01553"></a><span class="lineno"> 1553</span>          }</div>
<div class="line"><a id="l01554" name="l01554"></a><span class="lineno"> 1554</span>          <span class="keywordflow">if</span> (scratch_uint) <span class="comment">// fab: zero shift/rotation doesn&#39;t change CF or OF (&quot;rotate.asm&quot; and &quot;shift.asm&quot; tests)</span></div>
<div class="line"><a id="l01555" name="l01555"></a><span class="lineno"> 1555</span>            FLAG_OF = (1 &amp; op_result &gt;&gt; (8 * (i_w + 1) - 1)) ^ (FLAG_CF = (<span class="keywordtype">bool</span>)(scratch2_uint &amp; 1 &lt;&lt; (8 * (i_w + 1) - scratch_uint)));</div>
<div class="line"><a id="l01556" name="l01556"></a><span class="lineno"> 1556</span>          <span class="keywordflow">break</span>;</div>
<div class="line"><a id="l01557" name="l01557"></a><span class="lineno"> 1557</span>        <span class="keywordflow">case</span> 3: <span class="comment">// RCR</span></div>
<div class="line"><a id="l01558" name="l01558"></a><span class="lineno"> 1558</span>          <span class="keywordflow">if</span> (i_w) {</div>
<div class="line"><a id="l01559" name="l01559"></a><span class="lineno"> 1559</span>            op_dest   = RMEM16(rm_addr);</div>
<div class="line"><a id="l01560" name="l01560"></a><span class="lineno"> 1560</span>            op_result = WMEM16(rm_addr, (uint16_t)op_dest + (FLAG_CF &lt;&lt; (16 - scratch_uint)) + (op_source = scratch2_uint &lt;&lt; (17 - scratch_uint)));</div>
<div class="line"><a id="l01561" name="l01561"></a><span class="lineno"> 1561</span>          } <span class="keywordflow">else</span> {</div>
<div class="line"><a id="l01562" name="l01562"></a><span class="lineno"> 1562</span>            op_dest   = RMEM8(rm_addr);</div>
<div class="line"><a id="l01563" name="l01563"></a><span class="lineno"> 1563</span>            op_result = WMEM8(rm_addr, (uint8_t)op_dest + (FLAG_CF &lt;&lt; (8 - scratch_uint)) + (op_source = (uint8_t)scratch2_uint &lt;&lt; (9 - scratch_uint)));</div>
<div class="line"><a id="l01564" name="l01564"></a><span class="lineno"> 1564</span>          }</div>
<div class="line"><a id="l01565" name="l01565"></a><span class="lineno"> 1565</span>          <span class="keywordflow">if</span> (scratch_uint) { <span class="comment">// fab: zero shift/rotation doesn&#39;t change CF or OF (&quot;rotate.asm&quot; and &quot;shift.asm&quot; tests)</span></div>
<div class="line"><a id="l01566" name="l01566"></a><span class="lineno"> 1566</span>            FLAG_CF = (bool)(scratch2_uint &amp; 1 &lt;&lt; (scratch_uint - 1));</div>
<div class="line"><a id="l01567" name="l01567"></a><span class="lineno"> 1567</span>            FLAG_OF = (1 &amp; op_result &gt;&gt; (8 * (i_w + 1) - 1)) ^ (1 &amp; (i_w ? (int16_t)op_result * 2 : op_result * 2) &gt;&gt; (8 * (i_w + 1) - 1));</div>
<div class="line"><a id="l01568" name="l01568"></a><span class="lineno"> 1568</span>          }</div>
<div class="line"><a id="l01569" name="l01569"></a><span class="lineno"> 1569</span>          <span class="keywordflow">break</span>;</div>
<div class="line"><a id="l01570" name="l01570"></a><span class="lineno"> 1570</span>        <span class="keywordflow">case</span> 4: <span class="comment">// SHL</span></div>
<div class="line"><a id="l01571" name="l01571"></a><span class="lineno"> 1571</span>          <span class="keywordflow">if</span> (scratch_uint) <span class="comment">// fab: zero shift/rotation doesn&#39;t change CF or OF (&quot;rotate.asm&quot; and &quot;shift.asm&quot; tests)</span></div>
<div class="line"><a id="l01572" name="l01572"></a><span class="lineno"> 1572</span>            FLAG_OF = (1 &amp; op_result &gt;&gt; (8 * (i_w + 1) - 1)) ^ (FLAG_CF = (1 &amp; (op_dest &lt;&lt; (scratch_uint - 1)) &gt;&gt; (8 * (i_w + 1) - 1)));</div>
<div class="line"><a id="l01573" name="l01573"></a><span class="lineno"> 1573</span>          <span class="keywordflow">break</span>;</div>
<div class="line"><a id="l01574" name="l01574"></a><span class="lineno"> 1574</span>        <span class="keywordflow">case</span> 5: <span class="comment">// SHR</span></div>
<div class="line"><a id="l01575" name="l01575"></a><span class="lineno"> 1575</span>          <span class="keywordflow">if</span> (scratch_uint) <span class="comment">// fab: zero shift/rotation doesn&#39;t change CF or OF (&quot;rotate.asm&quot; and &quot;shift.asm&quot; tests)</span></div>
<div class="line"><a id="l01576" name="l01576"></a><span class="lineno"> 1576</span>            FLAG_OF = 1 &amp; op_dest &gt;&gt; (8 * (i_w + 1) - 1);</div>
<div class="line"><a id="l01577" name="l01577"></a><span class="lineno"> 1577</span>          <span class="keywordflow">break</span>;</div>
<div class="line"><a id="l01578" name="l01578"></a><span class="lineno"> 1578</span>        <span class="keywordflow">case</span> 7: <span class="comment">// SAR</span></div>
<div class="line"><a id="l01579" name="l01579"></a><span class="lineno"> 1579</span>          scratch_uint &lt; 8 * (i_w + 1) || (FLAG_CF = (<span class="keywordtype">bool</span>)scratch2_uint);</div>
<div class="line"><a id="l01580" name="l01580"></a><span class="lineno"> 1580</span>          FLAG_OF = 0;</div>
<div class="line"><a id="l01581" name="l01581"></a><span class="lineno"> 1581</span>          <span class="keywordflow">if</span> (i_w) {</div>
<div class="line"><a id="l01582" name="l01582"></a><span class="lineno"> 1582</span>            op_dest      = RMEM16(rm_addr);</div>
<div class="line"><a id="l01583" name="l01583"></a><span class="lineno"> 1583</span>            uint16_t u16 = (uint16_t)scratch2_uint * ~(((1 &lt;&lt; 16) - 1) &gt;&gt; scratch_uint);</div>
<div class="line"><a id="l01584" name="l01584"></a><span class="lineno"> 1584</span>            op_result    = WMEM16(rm_addr, op_dest + (op_source = u16));</div>
<div class="line"><a id="l01585" name="l01585"></a><span class="lineno"> 1585</span>          } <span class="keywordflow">else</span> {</div>
<div class="line"><a id="l01586" name="l01586"></a><span class="lineno"> 1586</span>            op_dest    = RMEM8(rm_addr);</div>
<div class="line"><a id="l01587" name="l01587"></a><span class="lineno"> 1587</span>            uint8_t u8 = (uint8_t)scratch2_uint * ~(((1 &lt;&lt; 8) - 1) &gt;&gt; scratch_uint);</div>
<div class="line"><a id="l01588" name="l01588"></a><span class="lineno"> 1588</span>            op_result  = WMEM8(rm_addr, op_dest + (op_source = u8));</div>
<div class="line"><a id="l01589" name="l01589"></a><span class="lineno"> 1589</span>          }</div>
<div class="line"><a id="l01590" name="l01590"></a><span class="lineno"> 1590</span>          <span class="keywordflow">break</span>;</div>
<div class="line"><a id="l01591" name="l01591"></a><span class="lineno"> 1591</span>      };</div>
<div class="line"><a id="l01592" name="l01592"></a><span class="lineno"> 1592</span>      <span class="keywordflow">break</span>;</div>
<div class="line"><a id="l01593" name="l01593"></a><span class="lineno"> 1593</span>    }</div>
<div class="line"><a id="l01594" name="l01594"></a><span class="lineno"> 1594</span>    <span class="keywordflow">case</span> 13: <span class="comment">// LOOPxx</span></div>
<div class="line"><a id="l01595" name="l01595"></a><span class="lineno"> 1595</span>      <span class="comment">// i_reg4bit: 0=LOOPNZ, 1=LOOPZ, 2=LOOP</span></div>
<div class="line"><a id="l01596" name="l01596"></a><span class="lineno"> 1596</span>      <span class="keywordflow">if</span> (--regs16[REG_CX])</div>
<div class="line"><a id="l01597" name="l01597"></a><span class="lineno"> 1597</span>        reg_ip += ((FLAG_ZF ^ !i_reg4bit) | (<span class="keywordtype">bool</span>)(i_reg4bit &amp; 2)) * (int8_t) i_data0;</div>
<div class="line"><a id="l01598" name="l01598"></a><span class="lineno"> 1598</span>      <span class="keywordflow">break</span>;</div>
<div class="line"><a id="l01599" name="l01599"></a><span class="lineno"> 1599</span>    <span class="keywordflow">case</span> 14: <span class="comment">// JMP | CALL int16_t/near</span></div>
<div class="line"><a id="l01600" name="l01600"></a><span class="lineno"> 1600</span>      reg_ip += 3 - i_d;</div>
<div class="line"><a id="l01601" name="l01601"></a><span class="lineno"> 1601</span>      <span class="keywordflow">if</span> (!i_w) {</div>
<div class="line"><a id="l01602" name="l01602"></a><span class="lineno"> 1602</span>        <span class="keywordflow">if</span> (i_d) {</div>
<div class="line"><a id="l01603" name="l01603"></a><span class="lineno"> 1603</span>          <span class="comment">// JMP far</span></div>
<div class="line"><a id="l01604" name="l01604"></a><span class="lineno"> 1604</span>          reg_ip = 0;</div>
<div class="line"><a id="l01605" name="l01605"></a><span class="lineno"> 1605</span>          regs16[REG_CS] = i_data2;</div>
<div class="line"><a id="l01606" name="l01606"></a><span class="lineno"> 1606</span>        } <span class="keywordflow">else</span> {</div>
<div class="line"><a id="l01607" name="l01607"></a><span class="lineno"> 1607</span>          <span class="comment">// CALL</span></div>
<div class="line"><a id="l01608" name="l01608"></a><span class="lineno"> 1608</span>          i_w = 1;</div>
<div class="line"><a id="l01609" name="l01609"></a><span class="lineno"> 1609</span>          regs16[REG_SP] -= 2;</div>
<div class="line"><a id="l01610" name="l01610"></a><span class="lineno"> 1610</span>          MEM16(16 * regs16[REG_SS] + regs16[REG_SP]) = reg_ip;</div>
<div class="line"><a id="l01611" name="l01611"></a><span class="lineno"> 1611</span>        }</div>
<div class="line"><a id="l01612" name="l01612"></a><span class="lineno"> 1612</span>      }</div>
<div class="line"><a id="l01613" name="l01613"></a><span class="lineno"> 1613</span>      reg_ip += i_d &amp;&amp; i_w ? (int8_t) i_data0 : i_data0;</div>
<div class="line"><a id="l01614" name="l01614"></a><span class="lineno"> 1614</span>      <span class="keywordflow">return</span>; <span class="comment">// no calc IP, no flags</span></div>
<div class="line"><a id="l01615" name="l01615"></a><span class="lineno"> 1615</span>    <span class="keywordflow">case</span> 15: <span class="comment">// TEST reg, r/m</span></div>
<div class="line"><a id="l01616" name="l01616"></a><span class="lineno"> 1616</span>      <span class="keywordflow">if</span> (i_w) {</div>
<div class="line"><a id="l01617" name="l01617"></a><span class="lineno"> 1617</span>        op_result = RMEM16(op_from_addr) &amp; RMEM16(op_to_addr);</div>
<div class="line"><a id="l01618" name="l01618"></a><span class="lineno"> 1618</span>      } <span class="keywordflow">else</span> {</div>
<div class="line"><a id="l01619" name="l01619"></a><span class="lineno"> 1619</span>        op_result = RMEM8(op_from_addr) &amp; RMEM8(op_to_addr);</div>
<div class="line"><a id="l01620" name="l01620"></a><span class="lineno"> 1620</span>      }</div>
<div class="line"><a id="l01621" name="l01621"></a><span class="lineno"> 1621</span>      <span class="keywordflow">break</span>;</div>
<div class="line"><a id="l01622" name="l01622"></a><span class="lineno"> 1622</span>    <span class="keywordflow">case</span> 16: <span class="comment">// XCHG AX, regs16</span></div>
<div class="line"><a id="l01623" name="l01623"></a><span class="lineno"> 1623</span>      <span class="keywordflow">if</span> (i_reg4bit != REG_AX) {</div>
<div class="line"><a id="l01624" name="l01624"></a><span class="lineno"> 1624</span>        uint16_t t = regs16[REG_AX];</div>
<div class="line"><a id="l01625" name="l01625"></a><span class="lineno"> 1625</span>        regs16[REG_AX] = regs16[i_reg4bit];</div>
<div class="line"><a id="l01626" name="l01626"></a><span class="lineno"> 1626</span>        regs16[i_reg4bit] = t;</div>
<div class="line"><a id="l01627" name="l01627"></a><span class="lineno"> 1627</span>      }</div>
<div class="line"><a id="l01628" name="l01628"></a><span class="lineno"> 1628</span>      ++reg_ip;</div>
<div class="line"><a id="l01629" name="l01629"></a><span class="lineno"> 1629</span>      <span class="keywordflow">return</span>; <span class="comment">// no calc ip, no flags</span></div>
<div class="line"><a id="l01630" name="l01630"></a><span class="lineno"> 1630</span>    <span class="keywordflow">case</span> 24: <span class="comment">// NOP|XCHG reg, r/m</span></div>
<div class="line"><a id="l01631" name="l01631"></a><span class="lineno"> 1631</span>      <span class="keywordflow">if</span> (op_to_addr != op_from_addr) {</div>
<div class="line"><a id="l01632" name="l01632"></a><span class="lineno"> 1632</span>        <span class="keywordflow">if</span> (i_w) {</div>
<div class="line"><a id="l01633" name="l01633"></a><span class="lineno"> 1633</span>          uint16_t t = RMEM16(op_to_addr);</div>
<div class="line"><a id="l01634" name="l01634"></a><span class="lineno"> 1634</span>          WMEM16(op_to_addr, RMEM16(op_from_addr));</div>
<div class="line"><a id="l01635" name="l01635"></a><span class="lineno"> 1635</span>          WMEM16(op_from_addr, t);</div>
<div class="line"><a id="l01636" name="l01636"></a><span class="lineno"> 1636</span>        } <span class="keywordflow">else</span> {</div>
<div class="line"><a id="l01637" name="l01637"></a><span class="lineno"> 1637</span>          uint16_t t = RMEM8(op_to_addr);</div>
<div class="line"><a id="l01638" name="l01638"></a><span class="lineno"> 1638</span>          WMEM8(op_to_addr, RMEM8(op_from_addr));</div>
<div class="line"><a id="l01639" name="l01639"></a><span class="lineno"> 1639</span>          WMEM8(op_from_addr, t);</div>
<div class="line"><a id="l01640" name="l01640"></a><span class="lineno"> 1640</span>        }</div>
<div class="line"><a id="l01641" name="l01641"></a><span class="lineno"> 1641</span>      }</div>
<div class="line"><a id="l01642" name="l01642"></a><span class="lineno"> 1642</span>      <span class="keywordflow">break</span>;</div>
<div class="line"><a id="l01643" name="l01643"></a><span class="lineno"> 1643</span>    <span class="keywordflow">case</span> 17: <span class="comment">// MOVSx (extra=0)|STOSx (extra=1)|LODSx (extra=2)</span></div>
<div class="line"><a id="l01644" name="l01644"></a><span class="lineno"> 1644</span>    {</div>
<div class="line"><a id="l01645" name="l01645"></a><span class="lineno"> 1645</span>      int32_t seg = seg_override_en ? seg_override : REG_DS;</div>
<div class="line"><a id="l01646" name="l01646"></a><span class="lineno"> 1646</span>      <span class="keywordflow">if</span> (i_w) {</div>
<div class="line"><a id="l01647" name="l01647"></a><span class="lineno"> 1647</span>        <span class="keyword">const</span> <span class="keywordtype">int</span> dec = (2 * FLAG_DF - 1) * 2;</div>
<div class="line"><a id="l01648" name="l01648"></a><span class="lineno"> 1648</span>        <span class="keywordflow">for</span> (int32_t i = rep_override_en ? regs16[REG_CX] : 1; i; --i) {</div>
<div class="line"><a id="l01649" name="l01649"></a><span class="lineno"> 1649</span>          uint16_t src = extra &amp; 1 ? regs16[REG_AX] : RMEM16(16 * regs16[seg] + regs16[REG_SI]);</div>
<div class="line"><a id="l01650" name="l01650"></a><span class="lineno"> 1650</span>          <span class="keywordflow">if</span> (extra &lt; 2) {</div>
<div class="line"><a id="l01651" name="l01651"></a><span class="lineno"> 1651</span>            WMEM16(16 * regs16[REG_ES] + regs16[REG_DI], src);</div>
<div class="line"><a id="l01652" name="l01652"></a><span class="lineno"> 1652</span>            PSRAM_WORKAROUND2;</div>
<div class="line"><a id="l01653" name="l01653"></a><span class="lineno"> 1653</span>          } <span class="keywordflow">else</span></div>
<div class="line"><a id="l01654" name="l01654"></a><span class="lineno"> 1654</span>            regs16[REG_AX] = src;</div>
<div class="line"><a id="l01655" name="l01655"></a><span class="lineno"> 1655</span>          extra &amp; 1 || (regs16[REG_SI] -= dec);</div>
<div class="line"><a id="l01656" name="l01656"></a><span class="lineno"> 1656</span>          extra &amp; 2 || (regs16[REG_DI] -= dec);</div>
<div class="line"><a id="l01657" name="l01657"></a><span class="lineno"> 1657</span> </div>
<div class="line"><a id="l01658" name="l01658"></a><span class="lineno"> 1658</span>        }</div>
<div class="line"><a id="l01659" name="l01659"></a><span class="lineno"> 1659</span>      } <span class="keywordflow">else</span> {</div>
<div class="line"><a id="l01660" name="l01660"></a><span class="lineno"> 1660</span>        <span class="keyword">const</span> <span class="keywordtype">int</span> dec = (2 * FLAG_DF - 1);</div>
<div class="line"><a id="l01661" name="l01661"></a><span class="lineno"> 1661</span>        <span class="keywordflow">for</span> (int32_t i = rep_override_en ? regs16[REG_CX] : 1; i; --i) {</div>
<div class="line"><a id="l01662" name="l01662"></a><span class="lineno"> 1662</span>          uint8_t src = extra &amp; 1 ? regs8[REG_AL] : RMEM8(16 * regs16[seg] + regs16[REG_SI]);</div>
<div class="line"><a id="l01663" name="l01663"></a><span class="lineno"> 1663</span>          <span class="keywordflow">if</span> (extra &lt; 2) {</div>
<div class="line"><a id="l01664" name="l01664"></a><span class="lineno"> 1664</span>            WMEM8(16 * regs16[REG_ES] + regs16[REG_DI], src);</div>
<div class="line"><a id="l01665" name="l01665"></a><span class="lineno"> 1665</span>            PSRAM_WORKAROUND2;</div>
<div class="line"><a id="l01666" name="l01666"></a><span class="lineno"> 1666</span>          } <span class="keywordflow">else</span></div>
<div class="line"><a id="l01667" name="l01667"></a><span class="lineno"> 1667</span>            regs8[REG_AL] = src;</div>
<div class="line"><a id="l01668" name="l01668"></a><span class="lineno"> 1668</span>          extra &amp; 1 || (regs16[REG_SI] -= dec);</div>
<div class="line"><a id="l01669" name="l01669"></a><span class="lineno"> 1669</span>          extra &amp; 2 || (regs16[REG_DI] -= dec);</div>
<div class="line"><a id="l01670" name="l01670"></a><span class="lineno"> 1670</span>        }</div>
<div class="line"><a id="l01671" name="l01671"></a><span class="lineno"> 1671</span>      }</div>
<div class="line"><a id="l01672" name="l01672"></a><span class="lineno"> 1672</span>      <span class="keywordflow">if</span> (rep_override_en)</div>
<div class="line"><a id="l01673" name="l01673"></a><span class="lineno"> 1673</span>        regs16[REG_CX] = 0;</div>
<div class="line"><a id="l01674" name="l01674"></a><span class="lineno"> 1674</span>      ++reg_ip;</div>
<div class="line"><a id="l01675" name="l01675"></a><span class="lineno"> 1675</span>      <span class="keywordflow">return</span>; <span class="comment">// no calc ip, no flags</span></div>
<div class="line"><a id="l01676" name="l01676"></a><span class="lineno"> 1676</span>    }</div>
<div class="line"><a id="l01677" name="l01677"></a><span class="lineno"> 1677</span>    <span class="keywordflow">case</span> 18: <span class="comment">// CMPSx (extra=0)|SCASx (extra=1)</span></div>
<div class="line"><a id="l01678" name="l01678"></a><span class="lineno"> 1678</span>    {</div>
<div class="line"><a id="l01679" name="l01679"></a><span class="lineno"> 1679</span>      <span class="keywordtype">int</span> count = rep_override_en ? regs16[REG_CX] : 1;</div>
<div class="line"><a id="l01680" name="l01680"></a><span class="lineno"> 1680</span>      <span class="keywordflow">if</span> (count) {</div>
<div class="line"><a id="l01681" name="l01681"></a><span class="lineno"> 1681</span>        <span class="keywordtype">int</span> incval = (2 * FLAG_DF - 1) * (i_w + 1);</div>
<div class="line"><a id="l01682" name="l01682"></a><span class="lineno"> 1682</span>        <span class="keywordflow">if</span> (extra) {</div>
<div class="line"><a id="l01683" name="l01683"></a><span class="lineno"> 1683</span>          <span class="comment">// SCASx</span></div>
<div class="line"><a id="l01684" name="l01684"></a><span class="lineno"> 1684</span>          op_dest = i_w ? regs16[REG_AX] : regs8[REG_AL];</div>
<div class="line"><a id="l01685" name="l01685"></a><span class="lineno"> 1685</span>          <span class="keywordflow">for</span> (; count; rep_override_en || count--) {</div>
<div class="line"><a id="l01686" name="l01686"></a><span class="lineno"> 1686</span>            <span class="keywordflow">if</span> (i_w) {</div>
<div class="line"><a id="l01687" name="l01687"></a><span class="lineno"> 1687</span>              op_result = op_dest - (op_source = RMEM16(16 * regs16[REG_ES] + regs16[REG_DI]));</div>
<div class="line"><a id="l01688" name="l01688"></a><span class="lineno"> 1688</span>            } <span class="keywordflow">else</span> {</div>
<div class="line"><a id="l01689" name="l01689"></a><span class="lineno"> 1689</span>              op_result = op_dest - (op_source = RMEM8(16 * regs16[REG_ES] + regs16[REG_DI]));</div>
<div class="line"><a id="l01690" name="l01690"></a><span class="lineno"> 1690</span>            }</div>
<div class="line"><a id="l01691" name="l01691"></a><span class="lineno"> 1691</span>            regs16[REG_DI] -= incval;</div>
<div class="line"><a id="l01692" name="l01692"></a><span class="lineno"> 1692</span>            rep_override_en &amp;&amp; !(--regs16[REG_CX] &amp;&amp; ((!op_result) == rep_mode)) &amp;&amp; (count = 0);</div>
<div class="line"><a id="l01693" name="l01693"></a><span class="lineno"> 1693</span>          }</div>
<div class="line"><a id="l01694" name="l01694"></a><span class="lineno"> 1694</span>        } <span class="keywordflow">else</span> {</div>
<div class="line"><a id="l01695" name="l01695"></a><span class="lineno"> 1695</span>          <span class="comment">// CMPSx</span></div>
<div class="line"><a id="l01696" name="l01696"></a><span class="lineno"> 1696</span>          <span class="keywordtype">int</span> scratch2_uint = seg_override_en ? seg_override : REG_DS;</div>
<div class="line"><a id="l01697" name="l01697"></a><span class="lineno"> 1697</span>          <span class="keywordflow">for</span> (; count; rep_override_en || count--) {</div>
<div class="line"><a id="l01698" name="l01698"></a><span class="lineno"> 1698</span>            <span class="keywordflow">if</span> (i_w) {</div>
<div class="line"><a id="l01699" name="l01699"></a><span class="lineno"> 1699</span>              op_dest   = RMEM16(16 * regs16[scratch2_uint] + regs16[REG_SI]);</div>
<div class="line"><a id="l01700" name="l01700"></a><span class="lineno"> 1700</span>              op_result = op_dest - (op_source = RMEM16(16 * regs16[REG_ES] + regs16[REG_DI]));</div>
<div class="line"><a id="l01701" name="l01701"></a><span class="lineno"> 1701</span>            } <span class="keywordflow">else</span> {</div>
<div class="line"><a id="l01702" name="l01702"></a><span class="lineno"> 1702</span>              op_dest   = RMEM8(16 * regs16[scratch2_uint] + regs16[REG_SI]);</div>
<div class="line"><a id="l01703" name="l01703"></a><span class="lineno"> 1703</span>              op_result = op_dest - (op_source = RMEM8(16 * regs16[REG_ES] + regs16[REG_DI]));</div>
<div class="line"><a id="l01704" name="l01704"></a><span class="lineno"> 1704</span>            }</div>
<div class="line"><a id="l01705" name="l01705"></a><span class="lineno"> 1705</span>            regs16[REG_SI] -= incval;</div>
<div class="line"><a id="l01706" name="l01706"></a><span class="lineno"> 1706</span>            regs16[REG_DI] -= incval;</div>
<div class="line"><a id="l01707" name="l01707"></a><span class="lineno"> 1707</span>            rep_override_en &amp;&amp; !(--regs16[REG_CX] &amp;&amp; ((!op_result) == rep_mode)) &amp;&amp; (count = 0);</div>
<div class="line"><a id="l01708" name="l01708"></a><span class="lineno"> 1708</span>          }</div>
<div class="line"><a id="l01709" name="l01709"></a><span class="lineno"> 1709</span>        }</div>
<div class="line"><a id="l01710" name="l01710"></a><span class="lineno"> 1710</span>        set_flags_type = 3; <span class="comment">// set SZP/AO flags</span></div>
<div class="line"><a id="l01711" name="l01711"></a><span class="lineno"> 1711</span>        FLAG_CF = op_result &gt; op_dest;</div>
<div class="line"><a id="l01712" name="l01712"></a><span class="lineno"> 1712</span>      };</div>
<div class="line"><a id="l01713" name="l01713"></a><span class="lineno"> 1713</span>      ++reg_ip;</div>
<div class="line"><a id="l01714" name="l01714"></a><span class="lineno"> 1714</span>      calcIP = <span class="keyword">false</span>;</div>
<div class="line"><a id="l01715" name="l01715"></a><span class="lineno"> 1715</span>      <span class="keywordflow">break</span>;</div>
<div class="line"><a id="l01716" name="l01716"></a><span class="lineno"> 1716</span>    }</div>
<div class="line"><a id="l01717" name="l01717"></a><span class="lineno"> 1717</span>    <span class="keywordflow">case</span> 19: <span class="comment">// RET / RETF imm16</span></div>
<div class="line"><a id="l01718" name="l01718"></a><span class="lineno"> 1718</span>      reg_ip = MEM16(16 * regs16[REG_SS] + regs16[REG_SP]);</div>
<div class="line"><a id="l01719" name="l01719"></a><span class="lineno"> 1719</span>      regs16[REG_SP] += 2;</div>
<div class="line"><a id="l01720" name="l01720"></a><span class="lineno"> 1720</span>      <span class="keywordflow">if</span> (extra) {</div>
<div class="line"><a id="l01721" name="l01721"></a><span class="lineno"> 1721</span>        <span class="comment">// RETF</span></div>
<div class="line"><a id="l01722" name="l01722"></a><span class="lineno"> 1722</span>        regs16[REG_CS] = MEM16(16 * regs16[REG_SS] + regs16[REG_SP]);</div>
<div class="line"><a id="l01723" name="l01723"></a><span class="lineno"> 1723</span>        regs16[REG_SP] += 2;</div>
<div class="line"><a id="l01724" name="l01724"></a><span class="lineno"> 1724</span>      }</div>
<div class="line"><a id="l01725" name="l01725"></a><span class="lineno"> 1725</span>      regs16[REG_SP] += i_data0;</div>
<div class="line"><a id="l01726" name="l01726"></a><span class="lineno"> 1726</span>      <span class="keywordflow">return</span>; <span class="comment">// no calc ip, no flags</span></div>
<div class="line"><a id="l01727" name="l01727"></a><span class="lineno"> 1727</span>    <span class="keywordflow">case</span> 20: <span class="comment">// MOV r/m, immed</span></div>
<div class="line"><a id="l01728" name="l01728"></a><span class="lineno"> 1728</span>      <span class="keywordflow">if</span> (i_w) {</div>
<div class="line"><a id="l01729" name="l01729"></a><span class="lineno"> 1729</span>        WMEM16(op_from_addr, i_data2);</div>
<div class="line"><a id="l01730" name="l01730"></a><span class="lineno"> 1730</span>      } <span class="keywordflow">else</span> {</div>
<div class="line"><a id="l01731" name="l01731"></a><span class="lineno"> 1731</span>        WMEM8(op_from_addr, i_data2);</div>
<div class="line"><a id="l01732" name="l01732"></a><span class="lineno"> 1732</span>      }</div>
<div class="line"><a id="l01733" name="l01733"></a><span class="lineno"> 1733</span>      <span class="keywordflow">break</span>;</div>
<div class="line"><a id="l01734" name="l01734"></a><span class="lineno"> 1734</span>    <span class="keywordflow">case</span> 21: <span class="comment">// IN AL/AX, DX/imm8</span></div>
<div class="line"><a id="l01735" name="l01735"></a><span class="lineno"> 1735</span>    {</div>
<div class="line"><a id="l01736" name="l01736"></a><span class="lineno"> 1736</span>      int32_t port = extra ? regs16[REG_DX] : (uint8_t) i_data0;</div>
<div class="line"><a id="l01737" name="l01737"></a><span class="lineno"> 1737</span>      regs8[REG_AL] = s_readPort(s_context, port);</div>
<div class="line"><a id="l01738" name="l01738"></a><span class="lineno"> 1738</span>      <span class="keywordflow">if</span> (i_w)</div>
<div class="line"><a id="l01739" name="l01739"></a><span class="lineno"> 1739</span>        regs8[REG_AH] = s_readPort(s_context, port + 1);</div>
<div class="line"><a id="l01740" name="l01740"></a><span class="lineno"> 1740</span>      <span class="keywordflow">break</span>;</div>
<div class="line"><a id="l01741" name="l01741"></a><span class="lineno"> 1741</span>    }</div>
<div class="line"><a id="l01742" name="l01742"></a><span class="lineno"> 1742</span>    <span class="keywordflow">case</span> 22: <span class="comment">// OUT DX/imm8, AL/AX</span></div>
<div class="line"><a id="l01743" name="l01743"></a><span class="lineno"> 1743</span>    {</div>
<div class="line"><a id="l01744" name="l01744"></a><span class="lineno"> 1744</span>      int32_t port = extra ? regs16[REG_DX] : (uint8_t) i_data0;</div>
<div class="line"><a id="l01745" name="l01745"></a><span class="lineno"> 1745</span>      s_writePort(s_context, port, regs8[REG_AL]);</div>
<div class="line"><a id="l01746" name="l01746"></a><span class="lineno"> 1746</span>      <span class="keywordflow">if</span> (i_w)</div>
<div class="line"><a id="l01747" name="l01747"></a><span class="lineno"> 1747</span>        s_writePort(s_context, port + 1, regs8[REG_AH]);</div>
<div class="line"><a id="l01748" name="l01748"></a><span class="lineno"> 1748</span>      <span class="keywordflow">break</span>;</div>
<div class="line"><a id="l01749" name="l01749"></a><span class="lineno"> 1749</span>    }</div>
<div class="line"><a id="l01750" name="l01750"></a><span class="lineno"> 1750</span>    <span class="keywordflow">case</span> 28: <span class="comment">// DAA/DAS</span></div>
<div class="line"><a id="l01751" name="l01751"></a><span class="lineno"> 1751</span>      op_result = DAA_DAS();</div>
<div class="line"><a id="l01752" name="l01752"></a><span class="lineno"> 1752</span>      <span class="keywordflow">break</span>;</div>
<div class="line"><a id="l01753" name="l01753"></a><span class="lineno"> 1753</span>    <span class="keywordflow">case</span> 29: <span class="comment">// AAA/AAS</span></div>
<div class="line"><a id="l01754" name="l01754"></a><span class="lineno"> 1754</span>      op_result = AAA_AAS();</div>
<div class="line"><a id="l01755" name="l01755"></a><span class="lineno"> 1755</span>      <span class="keywordflow">break</span>;</div>
<div class="line"><a id="l01756" name="l01756"></a><span class="lineno"> 1756</span>    <span class="keywordflow">case</span> 30: <span class="comment">// CBW</span></div>
<div class="line"><a id="l01757" name="l01757"></a><span class="lineno"> 1757</span>      regs8[REG_AH] = -(1 &amp; (i_w ? * (int16_t *) &amp; regs8[REG_AL] : regs8[REG_AL]) &gt;&gt; (8 * (i_w + 1) - 1));</div>
<div class="line"><a id="l01758" name="l01758"></a><span class="lineno"> 1758</span>      <span class="keywordflow">break</span>;</div>
<div class="line"><a id="l01759" name="l01759"></a><span class="lineno"> 1759</span>    <span class="keywordflow">case</span> 31: <span class="comment">// CWD</span></div>
<div class="line"><a id="l01760" name="l01760"></a><span class="lineno"> 1760</span>      regs16[REG_DX] = -(1 &amp; (i_w ? * (int16_t *) &amp; regs16[REG_AX] : regs16[REG_AX]) &gt;&gt; (8 * (i_w + 1) - 1));</div>
<div class="line"><a id="l01761" name="l01761"></a><span class="lineno"> 1761</span>      <span class="keywordflow">break</span>;</div>
<div class="line"><a id="l01762" name="l01762"></a><span class="lineno"> 1762</span>    <span class="keywordflow">case</span> 32: <span class="comment">// CALL FAR imm16:imm16</span></div>
<div class="line"><a id="l01763" name="l01763"></a><span class="lineno"> 1763</span>    {</div>
<div class="line"><a id="l01764" name="l01764"></a><span class="lineno"> 1764</span>      regs16[REG_SP] -= 4;</div>
<div class="line"><a id="l01765" name="l01765"></a><span class="lineno"> 1765</span>      uint16_t * stack = &amp;MEM16(16 * regs16[REG_SS] + regs16[REG_SP]);</div>
<div class="line"><a id="l01766" name="l01766"></a><span class="lineno"> 1766</span>      stack[1] = regs16[REG_CS];</div>
<div class="line"><a id="l01767" name="l01767"></a><span class="lineno"> 1767</span>      stack[0] = reg_ip + 5;</div>
<div class="line"><a id="l01768" name="l01768"></a><span class="lineno"> 1768</span>      regs16[REG_CS]  = i_data2;</div>
<div class="line"><a id="l01769" name="l01769"></a><span class="lineno"> 1769</span>      reg_ip          = i_data0;</div>
<div class="line"><a id="l01770" name="l01770"></a><span class="lineno"> 1770</span>      <span class="keywordflow">return</span>; <span class="comment">// no calc ip, no flags</span></div>
<div class="line"><a id="l01771" name="l01771"></a><span class="lineno"> 1771</span>    }</div>
<div class="line"><a id="l01772" name="l01772"></a><span class="lineno"> 1772</span>    <span class="keywordflow">case</span> 33: <span class="comment">// PUSHF</span></div>
<div class="line"><a id="l01773" name="l01773"></a><span class="lineno"> 1773</span>      regs16[REG_SP] -= 2;</div>
<div class="line"><a id="l01774" name="l01774"></a><span class="lineno"> 1774</span>      MEM16(16 * regs16[REG_SS] + regs16[REG_SP]) = make_flags();</div>
<div class="line"><a id="l01775" name="l01775"></a><span class="lineno"> 1775</span>      ++reg_ip;</div>
<div class="line"><a id="l01776" name="l01776"></a><span class="lineno"> 1776</span>      <span class="keywordflow">return</span>; <span class="comment">// no calc ip, no flags</span></div>
<div class="line"><a id="l01777" name="l01777"></a><span class="lineno"> 1777</span>    <span class="keywordflow">case</span> 34: <span class="comment">// POPF</span></div>
<div class="line"><a id="l01778" name="l01778"></a><span class="lineno"> 1778</span>      regs16[REG_SP] += 2;</div>
<div class="line"><a id="l01779" name="l01779"></a><span class="lineno"> 1779</span>      set_flags(MEM16(16 * regs16[REG_SS] + (uint16_t)(-2 + regs16[REG_SP])));</div>
<div class="line"><a id="l01780" name="l01780"></a><span class="lineno"> 1780</span>      ++reg_ip;</div>
<div class="line"><a id="l01781" name="l01781"></a><span class="lineno"> 1781</span>      <span class="keywordflow">return</span>; <span class="comment">// no calc ip, no flags</span></div>
<div class="line"><a id="l01782" name="l01782"></a><span class="lineno"> 1782</span>    <span class="keywordflow">case</span> 35: <span class="comment">// SAHF</span></div>
<div class="line"><a id="l01783" name="l01783"></a><span class="lineno"> 1783</span>      set_flags((make_flags() &amp; 0xFF00) + regs8[REG_AH]);</div>
<div class="line"><a id="l01784" name="l01784"></a><span class="lineno"> 1784</span>      <span class="keywordflow">break</span>;</div>
<div class="line"><a id="l01785" name="l01785"></a><span class="lineno"> 1785</span>    <span class="keywordflow">case</span> 36: <span class="comment">// LAHF</span></div>
<div class="line"><a id="l01786" name="l01786"></a><span class="lineno"> 1786</span>      regs8[REG_AH] = make_flags();</div>
<div class="line"><a id="l01787" name="l01787"></a><span class="lineno"> 1787</span>      <span class="keywordflow">break</span>;</div>
<div class="line"><a id="l01788" name="l01788"></a><span class="lineno"> 1788</span>    <span class="keywordflow">case</span> 37: <span class="comment">// LES|LDS reg, r/m</span></div>
<div class="line"><a id="l01789" name="l01789"></a><span class="lineno"> 1789</span>      i_w = i_d = 1;</div>
<div class="line"><a id="l01790" name="l01790"></a><span class="lineno"> 1790</span>      regs16[i_reg] = RMEM16(rm_addr);</div>
<div class="line"><a id="l01791" name="l01791"></a><span class="lineno"> 1791</span>      regs16[extra / 2] = RMEM16(rm_addr + 2);</div>
<div class="line"><a id="l01792" name="l01792"></a><span class="lineno"> 1792</span>      <span class="keywordflow">break</span>;</div>
<div class="line"><a id="l01793" name="l01793"></a><span class="lineno"> 1793</span>    <span class="keywordflow">case</span> 38: <span class="comment">// INT 3</span></div>
<div class="line"><a id="l01794" name="l01794"></a><span class="lineno"> 1794</span>      ++reg_ip;</div>
<div class="line"><a id="l01795" name="l01795"></a><span class="lineno"> 1795</span>      pc_interrupt(3);</div>
<div class="line"><a id="l01796" name="l01796"></a><span class="lineno"> 1796</span>      <span class="keywordflow">return</span>; <span class="comment">// no calc ip, no flags</span></div>
<div class="line"><a id="l01797" name="l01797"></a><span class="lineno"> 1797</span>    <span class="keywordflow">case</span> 40: <span class="comment">// INTO</span></div>
<div class="line"><a id="l01798" name="l01798"></a><span class="lineno"> 1798</span>      ++reg_ip;</div>
<div class="line"><a id="l01799" name="l01799"></a><span class="lineno"> 1799</span>      <span class="keywordflow">if</span> (FLAG_OF)</div>
<div class="line"><a id="l01800" name="l01800"></a><span class="lineno"> 1800</span>        pc_interrupt(4);</div>
<div class="line"><a id="l01801" name="l01801"></a><span class="lineno"> 1801</span>      <span class="keywordflow">return</span>; <span class="comment">// no calc ip, no flags</span></div>
<div class="line"><a id="l01802" name="l01802"></a><span class="lineno"> 1802</span>    <span class="keywordflow">case</span> 41: <span class="comment">// AAM;</span></div>
<div class="line"><a id="l01803" name="l01803"></a><span class="lineno"> 1803</span>      <span class="keywordflow">if</span> (i_data0 &amp;= 0xFF) {</div>
<div class="line"><a id="l01804" name="l01804"></a><span class="lineno"> 1804</span>        regs8[REG_AH] = regs8[REG_AL] / i_data0;</div>
<div class="line"><a id="l01805" name="l01805"></a><span class="lineno"> 1805</span>        op_result = regs8[REG_AL] %= i_data0;</div>
<div class="line"><a id="l01806" name="l01806"></a><span class="lineno"> 1806</span>      } <span class="keywordflow">else</span> {</div>
<div class="line"><a id="l01807" name="l01807"></a><span class="lineno"> 1807</span>        <span class="comment">// Divide by zero</span></div>
<div class="line"><a id="l01808" name="l01808"></a><span class="lineno"> 1808</span>        raiseDivideByZeroInterrupt();</div>
<div class="line"><a id="l01809" name="l01809"></a><span class="lineno"> 1809</span>        <span class="keywordflow">return</span>; <span class="comment">// no calc ip, no flags</span></div>
<div class="line"><a id="l01810" name="l01810"></a><span class="lineno"> 1810</span>      }</div>
<div class="line"><a id="l01811" name="l01811"></a><span class="lineno"> 1811</span>      <span class="keywordflow">break</span>;</div>
<div class="line"><a id="l01812" name="l01812"></a><span class="lineno"> 1812</span>    <span class="keywordflow">case</span> 42: <span class="comment">// AAD</span></div>
<div class="line"><a id="l01813" name="l01813"></a><span class="lineno"> 1813</span>      i_w = 0;</div>
<div class="line"><a id="l01814" name="l01814"></a><span class="lineno"> 1814</span>      regs16[REG_AX] = op_result = 0xFF &amp; (regs8[REG_AL] + i_data0 * regs8[REG_AH]);</div>
<div class="line"><a id="l01815" name="l01815"></a><span class="lineno"> 1815</span>      <span class="keywordflow">break</span>;</div>
<div class="line"><a id="l01816" name="l01816"></a><span class="lineno"> 1816</span>    <span class="keywordflow">case</span> 43: <span class="comment">// SALC</span></div>
<div class="line"><a id="l01817" name="l01817"></a><span class="lineno"> 1817</span>      regs8[REG_AL] = -FLAG_CF;</div>
<div class="line"><a id="l01818" name="l01818"></a><span class="lineno"> 1818</span>      <span class="keywordflow">break</span>;</div>
<div class="line"><a id="l01819" name="l01819"></a><span class="lineno"> 1819</span>    <span class="keywordflow">case</span> 44: <span class="comment">// XLAT</span></div>
<div class="line"><a id="l01820" name="l01820"></a><span class="lineno"> 1820</span>      regs8[REG_AL] = RMEM8(16 * regs16[seg_override_en ? seg_override : REG_DS] + (uint16_t)(regs8[REG_AL] + regs16[REG_BX]));</div>
<div class="line"><a id="l01821" name="l01821"></a><span class="lineno"> 1821</span>      ++reg_ip;</div>
<div class="line"><a id="l01822" name="l01822"></a><span class="lineno"> 1822</span>      <span class="keywordflow">return</span>; <span class="comment">// no calc ip, no flags</span></div>
<div class="line"><a id="l01823" name="l01823"></a><span class="lineno"> 1823</span>    <span class="keywordflow">case</span> 45: <span class="comment">// CMC</span></div>
<div class="line"><a id="l01824" name="l01824"></a><span class="lineno"> 1824</span>      FLAG_CF ^= 1;</div>
<div class="line"><a id="l01825" name="l01825"></a><span class="lineno"> 1825</span>      ++reg_ip;</div>
<div class="line"><a id="l01826" name="l01826"></a><span class="lineno"> 1826</span>      <span class="keywordflow">return</span>; <span class="comment">// no calc ip, no flags</span></div>
<div class="line"><a id="l01827" name="l01827"></a><span class="lineno"> 1827</span>    <span class="keywordflow">case</span> 47: <span class="comment">// TEST AL/AX, immed</span></div>
<div class="line"><a id="l01828" name="l01828"></a><span class="lineno"> 1828</span>      <span class="keywordflow">if</span> (i_w) {</div>
<div class="line"><a id="l01829" name="l01829"></a><span class="lineno"> 1829</span>        op_result = regs16[REG_AX] &amp; i_data0;</div>
<div class="line"><a id="l01830" name="l01830"></a><span class="lineno"> 1830</span>      } <span class="keywordflow">else</span> {</div>
<div class="line"><a id="l01831" name="l01831"></a><span class="lineno"> 1831</span>        op_result = regs8[REG_AL] &amp; (uint8_t)i_data0;</div>
<div class="line"><a id="l01832" name="l01832"></a><span class="lineno"> 1832</span>      }</div>
<div class="line"><a id="l01833" name="l01833"></a><span class="lineno"> 1833</span>      <span class="keywordflow">break</span>;</div>
<div class="line"><a id="l01834" name="l01834"></a><span class="lineno"> 1834</span>    <span class="keywordflow">case</span> 48: <span class="comment">// LOCK:</span></div>
<div class="line"><a id="l01835" name="l01835"></a><span class="lineno"> 1835</span>      <span class="keywordflow">break</span>;</div>
<div class="line"><a id="l01836" name="l01836"></a><span class="lineno"> 1836</span>    <span class="keywordflow">case</span> 49: <span class="comment">// HLT</span></div>
<div class="line"><a id="l01837" name="l01837"></a><span class="lineno"> 1837</span>      <span class="comment">//printf(&quot;CPU HALT, IP = %04X:%04X, AX = %04X, BX = %04X, CX = %04X, DX = %04X\n&quot;, regs16[REG_CS], reg_ip, regs16[REG_AX], regs16[REG_BX], regs16[REG_CX], regs16[REG_DX]);</span></div>
<div class="line"><a id="l01838" name="l01838"></a><span class="lineno"> 1838</span>      s_halted = <span class="keyword">true</span>;</div>
<div class="line"><a id="l01839" name="l01839"></a><span class="lineno"> 1839</span>      <span class="keywordflow">return</span>; <span class="comment">// no calc ip, no flags</span></div>
<div class="line"><a id="l01840" name="l01840"></a><span class="lineno"> 1840</span>    <span class="keywordflow">case</span> 51: <span class="comment">// 80186, NEC V20: ENTER</span></div>
<div class="line"><a id="l01841" name="l01841"></a><span class="lineno"> 1841</span>    {</div>
<div class="line"><a id="l01842" name="l01842"></a><span class="lineno"> 1842</span>      <span class="comment">//printf(&quot;80186, NEC V20: ENTER\n&quot;);</span></div>
<div class="line"><a id="l01843" name="l01843"></a><span class="lineno"> 1843</span>      regs16[REG_SP] -= 2;</div>
<div class="line"><a id="l01844" name="l01844"></a><span class="lineno"> 1844</span>      MEM16(16 * regs16[REG_SS] + regs16[REG_SP]) = regs16[REG_BP];</div>
<div class="line"><a id="l01845" name="l01845"></a><span class="lineno"> 1845</span>      uint16_t framePtr = regs16[REG_SP];</div>
<div class="line"><a id="l01846" name="l01846"></a><span class="lineno"> 1846</span>      int16_t level = i_data2 &amp; 31;</div>
<div class="line"><a id="l01847" name="l01847"></a><span class="lineno"> 1847</span>      <span class="keywordflow">if</span> (level &gt; 0) {</div>
<div class="line"><a id="l01848" name="l01848"></a><span class="lineno"> 1848</span>        <span class="keywordflow">while</span> (--level) {</div>
<div class="line"><a id="l01849" name="l01849"></a><span class="lineno"> 1849</span>          regs16[REG_BP] -= 2;</div>
<div class="line"><a id="l01850" name="l01850"></a><span class="lineno"> 1850</span>          regs16[REG_SP] -= 2;</div>
<div class="line"><a id="l01851" name="l01851"></a><span class="lineno"> 1851</span>          MEM16(16 * regs16[REG_SS] + regs16[REG_SP]) = MEM16(16 * regs16[REG_SS] + regs16[REG_BP]);</div>
<div class="line"><a id="l01852" name="l01852"></a><span class="lineno"> 1852</span>        }</div>
<div class="line"><a id="l01853" name="l01853"></a><span class="lineno"> 1853</span>        regs16[REG_SP] -= 2;</div>
<div class="line"><a id="l01854" name="l01854"></a><span class="lineno"> 1854</span>        MEM16(16 * regs16[REG_SS] + regs16[REG_SP]) = framePtr;</div>
<div class="line"><a id="l01855" name="l01855"></a><span class="lineno"> 1855</span>      }</div>
<div class="line"><a id="l01856" name="l01856"></a><span class="lineno"> 1856</span>      regs16[REG_BP]  = framePtr;</div>
<div class="line"><a id="l01857" name="l01857"></a><span class="lineno"> 1857</span>      regs16[REG_SP] -= i_data0;</div>
<div class="line"><a id="l01858" name="l01858"></a><span class="lineno"> 1858</span>      <span class="keywordflow">break</span>;</div>
<div class="line"><a id="l01859" name="l01859"></a><span class="lineno"> 1859</span>    }</div>
<div class="line"><a id="l01860" name="l01860"></a><span class="lineno"> 1860</span>    <span class="keywordflow">case</span> 52: <span class="comment">// 80186, NEC V20: LEAVE</span></div>
<div class="line"><a id="l01861" name="l01861"></a><span class="lineno"> 1861</span>      <span class="comment">//printf(&quot;80186, NEC V20: LEAVE\n&quot;);</span></div>
<div class="line"><a id="l01862" name="l01862"></a><span class="lineno"> 1862</span>      regs16[REG_SP] = regs16[REG_BP];</div>
<div class="line"><a id="l01863" name="l01863"></a><span class="lineno"> 1863</span>      regs16[REG_BP] = MEM16(16 * regs16[REG_SS] + regs16[REG_SP]);</div>
<div class="line"><a id="l01864" name="l01864"></a><span class="lineno"> 1864</span>      regs16[REG_SP] += 2;</div>
<div class="line"><a id="l01865" name="l01865"></a><span class="lineno"> 1865</span>      <span class="keywordflow">break</span>;</div>
<div class="line"><a id="l01866" name="l01866"></a><span class="lineno"> 1866</span>    <span class="keywordflow">case</span> 53: <span class="comment">// 80186, NEC V20: PUSHA</span></div>
<div class="line"><a id="l01867" name="l01867"></a><span class="lineno"> 1867</span>    {</div>
<div class="line"><a id="l01868" name="l01868"></a><span class="lineno"> 1868</span>      <span class="comment">//printf(&quot;80186, NEC V20: PUSHA\n&quot;);</span></div>
<div class="line"><a id="l01869" name="l01869"></a><span class="lineno"> 1869</span>      uint16_t temp = regs16[REG_SP];</div>
<div class="line"><a id="l01870" name="l01870"></a><span class="lineno"> 1870</span>      regs16[REG_SP] -= 2;</div>
<div class="line"><a id="l01871" name="l01871"></a><span class="lineno"> 1871</span>      MEM16(16 * regs16[REG_SS] + regs16[REG_SP]) = regs16[REG_AX];</div>
<div class="line"><a id="l01872" name="l01872"></a><span class="lineno"> 1872</span>      regs16[REG_SP] -= 2;</div>
<div class="line"><a id="l01873" name="l01873"></a><span class="lineno"> 1873</span>      MEM16(16 * regs16[REG_SS] + regs16[REG_SP]) = regs16[REG_CX];</div>
<div class="line"><a id="l01874" name="l01874"></a><span class="lineno"> 1874</span>      regs16[REG_SP] -= 2;</div>
<div class="line"><a id="l01875" name="l01875"></a><span class="lineno"> 1875</span>      MEM16(16 * regs16[REG_SS] + regs16[REG_SP]) = regs16[REG_DX];</div>
<div class="line"><a id="l01876" name="l01876"></a><span class="lineno"> 1876</span>      regs16[REG_SP] -= 2;</div>
<div class="line"><a id="l01877" name="l01877"></a><span class="lineno"> 1877</span>      MEM16(16 * regs16[REG_SS] + regs16[REG_SP]) = regs16[REG_BX];</div>
<div class="line"><a id="l01878" name="l01878"></a><span class="lineno"> 1878</span>      regs16[REG_SP] -= 2;</div>
<div class="line"><a id="l01879" name="l01879"></a><span class="lineno"> 1879</span>      MEM16(16 * regs16[REG_SS] + regs16[REG_SP]) = temp;</div>
<div class="line"><a id="l01880" name="l01880"></a><span class="lineno"> 1880</span>      regs16[REG_SP] -= 2;</div>
<div class="line"><a id="l01881" name="l01881"></a><span class="lineno"> 1881</span>      MEM16(16 * regs16[REG_SS] + regs16[REG_SP]) = regs16[REG_BP];</div>
<div class="line"><a id="l01882" name="l01882"></a><span class="lineno"> 1882</span>      regs16[REG_SP] -= 2;</div>
<div class="line"><a id="l01883" name="l01883"></a><span class="lineno"> 1883</span>      MEM16(16 * regs16[REG_SS] + regs16[REG_SP]) = regs16[REG_SI];</div>
<div class="line"><a id="l01884" name="l01884"></a><span class="lineno"> 1884</span>      regs16[REG_SP] -= 2;</div>
<div class="line"><a id="l01885" name="l01885"></a><span class="lineno"> 1885</span>      MEM16(16 * regs16[REG_SS] + regs16[REG_SP]) = regs16[REG_DI];</div>
<div class="line"><a id="l01886" name="l01886"></a><span class="lineno"> 1886</span>      <span class="keywordflow">break</span>;</div>
<div class="line"><a id="l01887" name="l01887"></a><span class="lineno"> 1887</span>    }</div>
<div class="line"><a id="l01888" name="l01888"></a><span class="lineno"> 1888</span>    <span class="keywordflow">case</span> 54: <span class="comment">// 80186, NEC V20: POPA</span></div>
<div class="line"><a id="l01889" name="l01889"></a><span class="lineno"> 1889</span>    {</div>
<div class="line"><a id="l01890" name="l01890"></a><span class="lineno"> 1890</span>      <span class="comment">//printf(&quot;80186, NEC V20: POPA\n&quot;);</span></div>
<div class="line"><a id="l01891" name="l01891"></a><span class="lineno"> 1891</span>      regs16[REG_DI] = MEM16(16 * regs16[REG_SS] + regs16[REG_SP]);</div>
<div class="line"><a id="l01892" name="l01892"></a><span class="lineno"> 1892</span>      regs16[REG_SP] += 2;</div>
<div class="line"><a id="l01893" name="l01893"></a><span class="lineno"> 1893</span>      regs16[REG_SI] = MEM16(16 * regs16[REG_SS] + regs16[REG_SP]);</div>
<div class="line"><a id="l01894" name="l01894"></a><span class="lineno"> 1894</span>      regs16[REG_SP] += 2;</div>
<div class="line"><a id="l01895" name="l01895"></a><span class="lineno"> 1895</span>      regs16[REG_BP] = MEM16(16 * regs16[REG_SS] + regs16[REG_SP]);</div>
<div class="line"><a id="l01896" name="l01896"></a><span class="lineno"> 1896</span>      regs16[REG_SP] += 2;</div>
<div class="line"><a id="l01897" name="l01897"></a><span class="lineno"> 1897</span>      regs16[REG_SP] += 2;  <span class="comment">// SP ignored</span></div>
<div class="line"><a id="l01898" name="l01898"></a><span class="lineno"> 1898</span>      regs16[REG_BX] = MEM16(16 * regs16[REG_SS] + regs16[REG_SP]);</div>
<div class="line"><a id="l01899" name="l01899"></a><span class="lineno"> 1899</span>      regs16[REG_SP] += 2;</div>
<div class="line"><a id="l01900" name="l01900"></a><span class="lineno"> 1900</span>      regs16[REG_DX] = MEM16(16 * regs16[REG_SS] + regs16[REG_SP]);</div>
<div class="line"><a id="l01901" name="l01901"></a><span class="lineno"> 1901</span>      regs16[REG_SP] += 2;</div>
<div class="line"><a id="l01902" name="l01902"></a><span class="lineno"> 1902</span>      regs16[REG_CX] = MEM16(16 * regs16[REG_SS] + regs16[REG_SP]);</div>
<div class="line"><a id="l01903" name="l01903"></a><span class="lineno"> 1903</span>      regs16[REG_SP] += 2;</div>
<div class="line"><a id="l01904" name="l01904"></a><span class="lineno"> 1904</span>      regs16[REG_AX] = MEM16(16 * regs16[REG_SS] + regs16[REG_SP]);</div>
<div class="line"><a id="l01905" name="l01905"></a><span class="lineno"> 1905</span>      regs16[REG_SP] += 2;</div>
<div class="line"><a id="l01906" name="l01906"></a><span class="lineno"> 1906</span>      <span class="keywordflow">break</span>;</div>
<div class="line"><a id="l01907" name="l01907"></a><span class="lineno"> 1907</span>    }</div>
<div class="line"><a id="l01908" name="l01908"></a><span class="lineno"> 1908</span>    <span class="keywordflow">case</span> 55: <span class="comment">// 80186: BOUND</span></div>
<div class="line"><a id="l01909" name="l01909"></a><span class="lineno"> 1909</span>      printf(<span class="stringliteral">&quot;80186: BOUND - not implemented!\n&quot;</span>);</div>
<div class="line"><a id="l01910" name="l01910"></a><span class="lineno"> 1910</span>      <span class="keywordflow">break</span>;</div>
<div class="line"><a id="l01911" name="l01911"></a><span class="lineno"> 1911</span>    <span class="keywordflow">case</span> 56: <span class="comment">// 80186, NEC V20: PUSH imm16</span></div>
<div class="line"><a id="l01912" name="l01912"></a><span class="lineno"> 1912</span>      <span class="comment">//printf(&quot;80186, NEC V20: PUSH imm16\n&quot;);</span></div>
<div class="line"><a id="l01913" name="l01913"></a><span class="lineno"> 1913</span>      regs16[REG_SP] -= 2;</div>
<div class="line"><a id="l01914" name="l01914"></a><span class="lineno"> 1914</span>      MEM16(16 * regs16[REG_SS] + regs16[REG_SP]) = i_data0;</div>
<div class="line"><a id="l01915" name="l01915"></a><span class="lineno"> 1915</span>      <span class="keywordflow">break</span>;</div>
<div class="line"><a id="l01916" name="l01916"></a><span class="lineno"> 1916</span>    <span class="keywordflow">case</span> 57: <span class="comment">// 80186, NEC V20: PUSH imm8</span></div>
<div class="line"><a id="l01917" name="l01917"></a><span class="lineno"> 1917</span>      <span class="comment">//printf(&quot;80186, NEC V20: PUSH imm8\n&quot;);</span></div>
<div class="line"><a id="l01918" name="l01918"></a><span class="lineno"> 1918</span>      regs16[REG_SP] -= 2;</div>
<div class="line"><a id="l01919" name="l01919"></a><span class="lineno"> 1919</span>      MEM16(16 * regs16[REG_SS] + regs16[REG_SP]) = (i_data0 &amp; 0xff) | (i_data0 &amp; 0x80 ? 0xff00 : 0); <span class="comment">// 8-&gt;16 bit with sign extension</span></div>
<div class="line"><a id="l01920" name="l01920"></a><span class="lineno"> 1920</span>      <span class="keywordflow">break</span>;</div>
<div class="line"><a id="l01921" name="l01921"></a><span class="lineno"> 1921</span>    <span class="keywordflow">case</span> 58: <span class="comment">// 80186 IMUL</span></div>
<div class="line"><a id="l01922" name="l01922"></a><span class="lineno"> 1922</span>      printf(<span class="stringliteral">&quot;80186 IMUL - not implemented!\n&quot;</span>);</div>
<div class="line"><a id="l01923" name="l01923"></a><span class="lineno"> 1923</span>      <span class="keywordflow">break</span>;</div>
<div class="line"><a id="l01924" name="l01924"></a><span class="lineno"> 1924</span>    <span class="keywordflow">case</span> 59: <span class="comment">// 80186: INSB INSW</span></div>
<div class="line"><a id="l01925" name="l01925"></a><span class="lineno"> 1925</span>      printf(<span class="stringliteral">&quot;80186: INSB INSW - not implemented!\n&quot;</span>);</div>
<div class="line"><a id="l01926" name="l01926"></a><span class="lineno"> 1926</span>      <span class="keywordflow">break</span>;</div>
<div class="line"><a id="l01927" name="l01927"></a><span class="lineno"> 1927</span>    <span class="keywordflow">case</span> 60: <span class="comment">// 80186: OUTSB OUTSW</span></div>
<div class="line"><a id="l01928" name="l01928"></a><span class="lineno"> 1928</span>      printf(<span class="stringliteral">&quot;80186: OUTSB OUTSW - not implemented!\n&quot;</span>);</div>
<div class="line"><a id="l01929" name="l01929"></a><span class="lineno"> 1929</span>      <span class="keywordflow">break</span>;</div>
<div class="line"><a id="l01930" name="l01930"></a><span class="lineno"> 1930</span>    <span class="keywordflow">case</span> 69: <span class="comment">// 8087 MATH Coprocessor</span></div>
<div class="line"><a id="l01931" name="l01931"></a><span class="lineno"> 1931</span>      printf(<span class="stringliteral">&quot;8087 MATH Coprocessor %02X %02X %02X %02X - not implemented!\n&quot;</span>, opcode_stream[0], opcode_stream[1], opcode_stream[2], opcode_stream[3]);</div>
<div class="line"><a id="l01932" name="l01932"></a><span class="lineno"> 1932</span>      <span class="keywordflow">break</span>;</div>
<div class="line"><a id="l01933" name="l01933"></a><span class="lineno"> 1933</span>    <span class="comment">/*</span></div>
<div class="line"><a id="l01934" name="l01934"></a><span class="lineno"> 1934</span><span class="comment">    case 70: // 80286+</span></div>
<div class="line"><a id="l01935" name="l01935"></a><span class="lineno"> 1935</span><span class="comment">      printf(&quot;80286+\n&quot;);</span></div>
<div class="line"><a id="l01936" name="l01936"></a><span class="lineno"> 1936</span><span class="comment">      break;</span></div>
<div class="line"><a id="l01937" name="l01937"></a><span class="lineno"> 1937</span><span class="comment">    case 71: // 80386+</span></div>
<div class="line"><a id="l01938" name="l01938"></a><span class="lineno"> 1938</span><span class="comment">      printf(&quot;80386+\n&quot;);</span></div>
<div class="line"><a id="l01939" name="l01939"></a><span class="lineno"> 1939</span><span class="comment">      break;</span></div>
<div class="line"><a id="l01940" name="l01940"></a><span class="lineno"> 1940</span><span class="comment">    case 72: // BAD OP CODE</span></div>
<div class="line"><a id="l01941" name="l01941"></a><span class="lineno"> 1941</span><span class="comment">      printf(&quot;Bad 8086 opcode %02X %02X\n&quot;, opcode_stream[0], opcode_stream[1]);</span></div>
<div class="line"><a id="l01942" name="l01942"></a><span class="lineno"> 1942</span><span class="comment">      break;</span></div>
<div class="line"><a id="l01943" name="l01943"></a><span class="lineno"> 1943</span><span class="comment">      */</span></div>
<div class="line"><a id="l01944" name="l01944"></a><span class="lineno"> 1944</span>    <span class="keywordflow">default</span>:</div>
<div class="line"><a id="l01945" name="l01945"></a><span class="lineno"> 1945</span>      printf(<span class="stringliteral">&quot;Unsupported 8086 opcode %02X %02X\n&quot;</span>, opcode_stream[0], opcode_stream[1]);</div>
<div class="line"><a id="l01946" name="l01946"></a><span class="lineno"> 1946</span>      <span class="keywordflow">break</span>;</div>
<div class="line"><a id="l01947" name="l01947"></a><span class="lineno"> 1947</span>  }</div>
<div class="line"><a id="l01948" name="l01948"></a><span class="lineno"> 1948</span> </div>
<div class="line"><a id="l01949" name="l01949"></a><span class="lineno"> 1949</span>  <span class="comment">// Increment instruction pointer by computed instruction length.</span></div>
<div class="line"><a id="l01950" name="l01950"></a><span class="lineno"> 1950</span>  <span class="keywordflow">if</span> (calcIP)</div>
<div class="line"><a id="l01951" name="l01951"></a><span class="lineno"> 1951</span>    reg_ip += (i_mod * (i_mod != 3) + 2 * (!i_mod &amp;&amp; i_rm == 6)) * i_mod_size + base_size[raw_opcode_id] + i_w_adder[raw_opcode_id] * (i_w + 1);</div>
<div class="line"><a id="l01952" name="l01952"></a><span class="lineno"> 1952</span> </div>
<div class="line"><a id="l01953" name="l01953"></a><span class="lineno"> 1953</span>  <span class="comment">// If instruction needs to update SF, ZF and PF, set them as appropriate</span></div>
<div class="line"><a id="l01954" name="l01954"></a><span class="lineno"> 1954</span>  <span class="keywordflow">if</span> (set_flags_type &amp; 1) {</div>
<div class="line"><a id="l01955" name="l01955"></a><span class="lineno"> 1955</span>    FLAG_SF = (1 &amp; op_result &gt;&gt; (8 * (i_w + 1) - 1));</div>
<div class="line"><a id="l01956" name="l01956"></a><span class="lineno"> 1956</span>    FLAG_ZF = !op_result;</div>
<div class="line"><a id="l01957" name="l01957"></a><span class="lineno"> 1957</span>    FLAG_PF = parity[(uint8_t) op_result];</div>
<div class="line"><a id="l01958" name="l01958"></a><span class="lineno"> 1958</span> </div>
<div class="line"><a id="l01959" name="l01959"></a><span class="lineno"> 1959</span>    <span class="comment">// If instruction is an arithmetic or logic operation, also set AF/OF/CF as appropriate.</span></div>
<div class="line"><a id="l01960" name="l01960"></a><span class="lineno"> 1960</span>    <span class="keywordflow">if</span> (set_flags_type &amp; 2)</div>
<div class="line"><a id="l01961" name="l01961"></a><span class="lineno"> 1961</span>      set_AF_OF_arith(op_result);</div>
<div class="line"><a id="l01962" name="l01962"></a><span class="lineno"> 1962</span>    <span class="keywordflow">else</span> <span class="keywordflow">if</span> (set_flags_type &amp; 4)</div>
<div class="line"><a id="l01963" name="l01963"></a><span class="lineno"> 1963</span>      FLAG_CF = FLAG_OF = 0;</div>
<div class="line"><a id="l01964" name="l01964"></a><span class="lineno"> 1964</span>  }</div>
<div class="line"><a id="l01965" name="l01965"></a><span class="lineno"> 1965</span> </div>
<div class="line"><a id="l01966" name="l01966"></a><span class="lineno"> 1966</span>}</div>
<div class="line"><a id="l01967" name="l01967"></a><span class="lineno"> 1967</span> </div>
<div class="line"><a id="l01968" name="l01968"></a><span class="lineno"> 1968</span> </div>
<div class="line"><a id="l01969" name="l01969"></a><span class="lineno"> 1969</span>}   <span class="comment">// namespace fabgl</span></div>
</div><!-- fragment --></div><!-- contents -->
</div><!-- doc-content -->
<!-- start footer part -->
<div id="nav-path" class="navpath"><!-- id is needed for treeview function! -->
  <ul>
    <li class="navelem"><a class="el" href="dir_68267d1309a1af8e8297ef4c3efbcdba.html">src</a></li><li class="navelem"><a class="el" href="dir_8be7dd06aece89a21c34f4f57592b45a.html">emudevs</a></li><li class="navelem"><b>i8086.cpp</b></li>
    <li class="footer">Generated on Mon Aug 29 2022 13:52:05 for FabGL by <a href="https://www.doxygen.org/index.html"><img class="footer" src="doxygen.svg" width="104" height="31" alt="doxygen"/></a> 1.9.3 </li>
  </ul>
</div>
</body>
</html>
